I received your comments this morning and I believe I have fixed the logo issue. In the embedded code there is a line or two that puts the logo in and I've found it. Now when I post a 'video', I just have to remember to remove the logo code. Or I'll just avoid the top right hand corner of the screen. Sorry about that.
As for the sound quality I apologise as well. I'll work on that problem next.
Thanks for the feedback.
Day 3: The time has been long and I hope you are finding the lessons I leave here helpful. I haven't had as many questions as I'm used to hearing so I'm thinking that some of you are waiting for me to get back. Please make sure you don't wait too long though. We'll be quizzing things very soon to wrap things up before the holidays so be sure to budget at least one or two lunch breaks if you have been holding on to your questions.
PHYSICS 12: Today is a big lesson. We're looking at a few new ideas today and I know that there will be quesitons on this one tomorrow. Be sure to try as many as you can, and if you're behind at all and you get stuck use your time today to at least get caught up.
PRE-CALC 10: Fractions again! The rational expressions just continue to get more demanding today as we learn how to use our fractions rules to add and subtract them. Toss in some factoring as well and there is a lot of room for mistakes. Don't get discouraged though. If you show your work I can always find the many things you're doing right.
Some answers to questions from lesson 2 are here as well.
PHYSICS 11: Power and the Cost of Electricity. Since I haven't heard from anyone I'm guessing that things are going well. If you haven't done the Power lesson yet (14.8) please do so and then continue on to 14.9.
I'll see everyone tomorrow.
Hello everyone.
I was checking in on the blog and found that someone had a question or two from lesson 2. Here's some help.
Hello everyone.
I hope the dance (and your homework) went well last night. Today will be similar to yesterday. Thank you for your questions. I will get to them as soon as I can (likely in the morning-it's quite late now).
PHYSICS: 15.4-Electromagnetism I hope all went well yesterday. I'm not sure if link will be of much help as this topic is easier to demonstrate than explain. The book does do a fair job at it, but use the diagrams it gives you as well.
Trans Math 9: Good luck on your test today. Be sure to work on your handouts over the weekend. When I see you again on Tuesday, we'll look at the questions you had difficulty with and go from there.
Pre-Calc: Multiplying and Dividing Rational Expressions. I hope yesterday's lesson went OK. Today we're revisiting an old topic-fractions. This time they have variables and need to be factored. The link will hopefully cover most of it. Try your best and post your questions.
Your answer to questions on page 20 are here.
Physics 11: Ohm's law was the topic I posted for yesterday. But I believe you had some fun in the gym yesterday. If not and you're needing something new try Power.
Hey, some of those are tough! I'm glad you made it that far. Well done.
The key to solving a question like h) or i)is to pretend you're factoring it. Using h) as an example:
One answer could be 4x^2 + 13x +3 since 1 and 12 multiply to 12, but add to 13.
Hope that helped. If not ask me to clairify and I'll post a video explaining it more fully.
Thanks for the question. Have a great weekend.
Ah yes...this one is tricky...that's why it's last.
The trick here is to understand that Resistance is a physical property...it won't change as a result of being connected to a different circuit.
Knowing this, use the new voltage (240V) and the resistance of the Iron (12 ohms), and calculate the power it will use now connected to the new 'circuit' (with voltage now at 240V). This should give you 4800 W (which by the way is the answer to part c-not sure why they didn't ask part c before part b).
Step two will be to use the new power consumption (4800W), with the resistance of the Iron (12 ohms) to calculate the current it draws (I).
Hope this helped. If not let me know and I'll post a video.
We will be skipping 14.9 (whew) and on to chapter 15. If you find yourselves with some time take a quick read of 15.1, 15.2, and 15.3. Perhaps between favorite songs at the dance tonight-right?
Thanks for the question, keep asking them, and we'll start Magnetic Fields tomorrow (I'm aiming for a test next week-chapter 14 and maybe a small part of 15).
Have fun.
Hello Brittany (and class):
Thanks for your question.
Is 3(2x-5)(x+3)the same thing as3(2x+5)(x-3)?
Unfortunately the answer is no. If you multiply these expressions out you'll find that they're not equal. If you remember what the 'linear term' is you'll notice that instead of '1x' you'll have '-1x'. Don't be discouraged though. It's a common mistake and almost everyone makes it when they're learning the finer points of factoring trinomials.
Good job in finding the problem though.
Good luck and have fun at the dance.
Hello everyone.
Again I find myself posting my lessons to the blog using Teacher Tube and WizIQ. Useful tools when you need them. I've given links below to quickly find the information you will need today. Having the information is one thing, and being able to use the information is quite another. Since I can't be there to see your faces and listen to your discussions I have no way of knowing what information is working for you and what isn't. Teaching requires a two way flow of information. It starts with me giving you notes, examples, and some practice quesions. You then need to tell me what is or isn't working. As with any lesson I stress the importance of you asking questions when they occur to you. Today is no different. Please make sure you use some of your time today to leave a comment on the blog (any volunteers?) to leave me a list of questions I can help you with. I will post explanations as soon as I can. Good luck, and be nice to Mrs. Lepp today.
PS: Wish her a Merry Christmas for me.
PHYSICS 12: Power in Electric Circuits You'll be pleased with this topic I hope. The formulas are really easy.
MATH 9: Good Luck with your Test today...if you're nice Mrs. Lepp might even give you some help if you need it. Be sure to get started on your new sheet for next week. Some of the questions will be new and some you can do. I'll need you to try everything for next Monday so that I can explain our new topics to you efficiently.
PRE-CALC 10: Reducing Rational Expressions This is a small variation on the old idea of reducing fractions. We build on it by limiting what numbers 'x' can be equal to by defining something called a Domain. I know some of you will be struggling with some of the factoring we covered yesterday so be sure to post a comment with the list of questions you have.
PHYSICS 11: Ohm's Law Today will be a lot of note taking and some new ideas. Be sure to try the questions I have assigned and list the questions you have. I know there'll be a few.
Hope everyone has a great day!
(at left), and demonstrated refraction using the Ripple tank java applet. I recommend playing with it some (I think it looks pretty good in 3-d). I do want you to do some questions from the end of chapter however and I'll recommend a few. Try #53, 55, 60, 61,66, and 67. If you happen to be reading this from Roblin and having some difficulty you can comment here or email me and I'll post an example or two, or you can ask one of your seniors and they'll likely be able to show you how (again-good luck to you this weekend).PHYSICS 12: Today we started our work in Chapter 13. The first few sections (1-3) are review of some static electricity that you've learned in previous science classes. Section 4 is a look at Coulomb's Law for electrostatic charges. It's identical in form to Newton's Universal Law of Gravitation with the exception that now we'll have to interpret what a negative force represents (force of attraction between opposite charges). Section five extends these ideas to include vector addition of multiple forces. Essentially we'll be solving the net force statement for multiple charges. Be sure to complete some practice problems from the end of the chapter questions.
TRANS MATH 9: We marked and discussed 1.12 today. I handed out some extra practice pages for Scientific Notation as well. The answers are posted previously in the blog, but they are also hanging on my bulletin board. Make sure you give them a try before our next class since we'll be having a quiz the next time we meet.
PRE-CALC 10: Lesson 2 has some important definitions and I feel that the examples are essential to working out some of the harder questions later in the lesson and in the module so be sure to take a look and ask some questions. I'd like to quiz lesson 1 tomorrow.
PHYSICS 11: We took a look at sections five and six today. Two new formulas are listed there regarding the Index of Refraction and Snell's Law. We'll be quizzing 10.2 again I think, and up to 10.5 Friday or Monday. For the 10.5 quiz you'll be allowed to use the notes you've made so please make sure you finish them up for Friday.
Here are the answers to the extra practice sheets on Scientific Notation you asked for. If you are having trouble viewing them for some reason, they are also posted on my bulletin board. Happy studying!
PHYSICS 12: We wrote the chapter nine test today and I made sure we were all aware of the upcomming sections to be covered. Chapter 13 will be quick (and with luck, painless).
TRANS MATH 9: We marked worksheet 1.12 today, completed Mental Math #13, and discussed questions we still had about scientific notation. I'm planning a quiz for Thursday.
PRE-CALC 10: After a brief written summary of the Sine Law and Law of Cosines, we worked with scale and reviewed how to calculate distances using a scale. Then we extended the idea to area and then to volume. We worked through the examples of lesson one together and started #1-11 for tomorrow. Quiz on lesson 1 will be Thursday.
PHYSICS 11: Handed back the Chapter 8 tests today and discussed some questions. We then took a look at sections 10.3, 10.4, and 10.5. I'd like you to finish your notes from before and use the same method to make notes on these sections. I'll be quizzing 10.2 tomorrow. Study hard.
PHYSICS 12: We did a little planning for the remainder of the semester today and discovered that we have about as many days as topics left to cover. Although time will seem a little tight, we will get through everything. I would like to emphasize that if there is a topic you struggle with get some extra help immediately because we'll be moving on quickly. We decided then that tomorrow we would test Chapter 9, and aim for a test on Chapter 13 December 7.
TRANS MATH 9: Please make sure the worksheet on section 1.12 is ready for next class. I would also like to mark and discuss the word problems on 1.6.
PRE-CALC 10: We wrote the module 4 test today. I'm hoping to get those back to you as soon as possible; perhaps near the end of this week. Tomorrow we'll start Module 5.
PHYSICS 11: We discussed last week's wave demonstration and placed variables to represent it's properties. When you replace the 'distance' between crests with a new symbol (lamda) you get the wave equation. Tomorrow we'll take up your questions from #29, 30, 31, 37, & 38. Don't forget to check out our calendar in class...I've done some planning.
I'd just like to take a moment to thank the parents who came in last night to see me. It's nice to be able to discuss your childrens' progress and get feedback on how things are going. It's unfortunate that I'm unable to be at the school today, but I'd like to let everyone know that you don't have to wait for parent teacher interviews to discuss your children's progress. If you like you can always e-mail me, or call the school (328-5364).
It was nice to hear that some of you are checking the blog from time to time to catch up on notes, examples, or the day's assignments. That was good to know and has motivated me to post more frequently. If you do happen to 'drop by,' leave a quick comment if you could to let me know if what I posted was helpful or not. That way I'll know what is helpful, or what I can do to improve. After all, we're never too old or experienced to learn something new.
Thanks again, stay in touch, and good luck in the second half of our semester.
The above link will take you to a site for practice with the law of cosines. I suggest trying it out with a few questions from your assignment first as a check to see how you're making out with your calculator. This formula can be difficult to work with at first. Then make up a few triangles of your own that require the use of the law of cosines and use the applet to find your answers. This particular topic can require a fair bit of practice, so make up some questions of your own to try.
This link will take you to a page that covers the two Trig laws we've covered so far and explains them in quite a bit of detail. The explanations are followed by some problems that you could try. I suggest drawing the triangles described (an important skill to learn), then try answering them. There are answers at the bottom of the page so that you can check your work.
Happy solving!
Today we quizzed section 8.3. Since I'm writing this as you're writing the quiz I can only say that I hope it goes well for you. I'd like to remind you again that we have scheduled a test on Chapter 8 for Tuesday. The remainder of today and most likely Monday will be spent on reviewing for Tueday's test. I will want to discuss some of the harder problems on Monday such as #74 to #84 so over the weekend please have a look at these and give them a try (some of them will be on Tuesday's test).
Have a great weekend.
Wow.
I don't say that very often, but by the looks of the quizzes you wrote today you're deserving of it. Nicely done. We will need to spend some time on projectile motion but that isn't unusal.
We just stated discussing the conservation of Mechanical energy (9.8) near the end of class. As I tried to show you on the roller coaster as gravitational potential energy decreases, kinetic energy increases and vice versa.
On Monday we'll investigate the differences between elastic and inelastic collisions (though some of us have already discussed this) and complete some examples for section 9.8. Please make sure you have read section 9.8, made some notes, and tried a few questions from the 'the green pages' (maybe the first 5). If you like try this LINK to look at an animated version of what we were talking about today.
Have a great weekend.
Today we discussed what impulse was and how to calculate it. As was discovered there are a great number of questions that can be asked once you understand this 'rearrangement' of Newton's second law. The important thing to remember is that one of my favorite questions is #73 (but we'll save that one for Friday...tomorrow we'll quiz impulse only-no graphs).
Our work as of late has been about Work and Energy. The highlight of today involved the notion that when work is done on an object the kinetic or potential energy changes. This allows us to determine the amount of work performed on an object while knowing only of the object's mass, initial and final velocity.
On a complimentary note I thought I'd pass along a short note of congratulations and thanks. When you do your homework, teaching you the next concept is much easier for me.
Although tomorrow is planned to be a work session for sections 9.4, 9.5, and 9.6 I don't recommend not doing some homework tonight as I'm sure there are questions we will need to discuss before Friday's quiz.
Today we discussed my 'favorites' in the chapters we've discussed so far.
Today we looked at how similar our work with velocity is to our work with momentum now. Vector problems are usually broken down into using the law of cosines to find magnitude, and the law of sines to find direction. You'll need a good diagram of course. I've included an example for you in the link.
For tomorrow we'll be looking at how gravity interacts with the mass of an object, and inertia.
Starting on page 158, we'll read and make notes to page 162, where we'll look at some examples of Newton's Universal Law of Gravity. Early last week I introduced the topic briefly but now is the time to look at it in more depth.
I may get some time later today or tomorrow to post a video with some notes and/or an example or two. A short historical account of these 'heavy' ideas and their astronomical applications take a look at this.
'See' you Monday.
I tried something different with the sound...hopefully this is working better. Remember to get started on the review exercises whenever you are waiting for help. Have a great weekend.
I'm guessing that the review is going ok, and I thought that another day would be in order. On Monday we'll look at section 5.3. I'd like you to read that section and make some notes. I'll be giving an example or two on Monday and we'll be looking at a quiz or a test soon after I get back.
No...I was not in a tunnel when I recorded this...apparently I still have a few bugs to work out of the sound portion of the production. Hope it helps anyway.
I considered getting a new lesson together for today, but when I remembered that we spent our last class discussing 'how' for chapter 4 I thought today might be better spent doing some review.
Mrs. Lepp has some review sheets for you. Some of the questions might be a bit challenging, but read it though and work together and I'm sure you'll answer quite a few. For those of you who had difficulty with chapter 4, you're welcome to work on that instead. Please make sure you help each other study today.
We did a few equations for practice yesterday in class. If you wanted another look at how they go here they are.
We looked today at straight lines, and relationships that are like a straight line (known as linear relationships). You may find that some graph paper will be helpful for this module.
The link above might be a bit advanced for reading today, but as the module moves forward I'm sure we'll refer back to it again.
I have grown a little concerned about the amount of homework not being attempted and we discussed ways that you might be motivated to do more. We didn't seem to arrive at anything more constructive than 'candy for questions'. We all agreed that plan was not likely in our best interests. For the short term I'll be checking a little more frequently I think.
Here are some notes on the new assignment. Drop by for some extra help if you need it.
Today we took up some homework (specifically #50 and #51), and I tried to highlight the procedure to solving these complex vector problems.
Be sure to review some the projectile motion examples tonight and have a good breakfast tomorrow...see you at the test!
Today in Physics we tried to further develop our skill when converting a d-t graph to a v-t graph. We'll continue to work on that tomorrow. We also started using the formulas we wrote down last week.
I wanted to emphasize the importance of following the problem solving procedure. So I'll list it again.
When you follow these steps when solving problems I'll be able to give you marks for the parts you get right, but I'll also be better able to identify how to help you. Finish your homework tonight (1-4 pages 64 & 65) and I'll see you tomorrow in class.
Today we discussed some homework from lesson 1, then moved on to the lesson above. We read through the examples, and worked a few questions from the assignment. I skipped the mental math today.
Tomorrow we may get to writing down "the one line".
Today we took a quick look at the module to come. Our first lesson today was mostly review, with something new we called Exponential Equations. If you finish your homework for Monday and understand everything well...I'll pass along the 'one line' secret to unlock the rest of the module. More to come....
So if imagining what projectile motion might look like with all of the vectors and stuff drawn in is difficult (and it is), the link above (the title of this post) will take you to 'The Physics Classroom'. They have some great flash animation of most of the types of problems we'll be working on. Have a look.
Hopefully you've had another great day off...I thought I'd come in to work and get a few things ready in the classroom for when you return.
If you're doing some back to school shopping remember that notebooks are easy to use and pencils are the preferred writing utensil for mathematics. For Physics, Math 9, or Pre-Calc you won't need to fancy of a calculator, and if you'd like you could even postpone getting one until after we're back in school to ask me any questions you might have.
You might notice a link to my new WIKI. The wiki will be a place for everyone to share and add to from time to time. Not to worry we'll go slow at first until everyone is comfortable working with it.
See you soon!
So, exactly how did summer pass this quickly. It seems for me that we just finished classes, and now I'm already getting ready for the year to come. I hope your holidays have gone well. Thanks to W and to H for dropping by over the summer and stay in touch as I'll be updating things as the year goes along.
Over the next few days I'll update with a couple of suggestions for back to school supplies and if you're one the prospective members of the yet to be named "Calculus Club" be sure to leave a comment to at least say hi as we'll be working from here a great deal...
Enjoy the time we have left...
Hello everyone...
Well as you can see by the post history June was a busy month without much of a chance to do any posting.
I'll take this opportunity to wish everyone a great summer holiday, and if...for some reason you happen to stop by the site over the summer, leave us a note to say hi.
I'd also like to congratulate our grads on a job well done and thank everyone once more for the card, and the pen. It meant a great deal. Thank you very much. I've hung your 'tile' in the room by the window for all to see. Now others can ask about the class of 07.
Good luck, and for those returning in the fall...see you in September. Have a great summer.
This is my first attempt at fading things in and out between frames...it's a little tricky. I know I need to make the images bigger, and I'll be adding some narration in the future. Any other ideas?
OK...so to save you some 'google' time I found a quick list of uses of radiation along with a brief description too...
In case you're curious, this LINK may prove interesting study material. I'm wishing I had found it earlier (sigh).
Study hard.
This link will take you to some practice exams posted for New York State. Many of the questions are similar, but there are differences in our curricula so not all of the questions you find here will apply to us; nor will the questions you find, be an exhaustive list of what you'll be asked to do.
To find questions on magnetism you'll need to look at the older exams.
Today we discussed how a mind map (converted to an outline) can help us organize information. When information is organized it's easier to find at times like tests and quizzes.
We also practiced finding the areas of compound shapes and practiced showing our work to 'communicate what we understand'.
In the last few days we've been working on a way to factor large polynomial functions (finding their zeroes) without having to guess and check and then divide.
The remainder theroem lets us determine the remainder of a division without dividing. We substitute the zero of the divisor (the value of the binomial we want to check as a factor which makes the binomial equal to zero) into the polynomial. The value of the polynomial is the remainder of the division.
The factor theroem is an extension of this idea simply because if we happen to find a value that makes the function produce a zero remainder, we know that the binomial whose zero is that value, is a factor of the polynomial.
Take a look at the examples in your module (they are particularly good for this one). The link above will take you to today's notes where we discussed how to move from guess and check, to a more efficient way of guessing at zeroes of these elusive polynomial functions.
If you follow the link above it will take you to a fairly straight forward description of how an escape velocity is calculated. It is important to note that it depends on the mass and radius of the planet you are attempting to leave (Wikipedia refers to the value of 'r' as the height from which you are trying to escape-which for our purposes will usually be the surface of the planet).
If you don't like the Wikipedia article I did a quick set of notes HERE
A brief set of notes on the above and a quick introduction into Half life calculations. Don't forget about the remainder of your test this week.
This is the first post being published from my new laptop! It has taken me awhile to get it set up and working properly (wireless connections are fairly straight forward unless it involves a network). I'm also working with slightly different software to create the notes and things which took some time as well.
Hope the notes are more visible than my previous attempts.
So I'm back from my adventures in curriculum development and ready to get back to the business of Physics and Math.
In Physics this week we're going to quiz chapter 13 a few times so make sure you're keeping up. Today it's 13.5/13.6; tomorrow we'll spend some quality time with 13.7 and if all goes well we'll be looking at 13.8 by Wednesday. Now if that plan works Thursday will be 13.9 and if that happens we'll review Friday for a test a week from today (that's very tenative...ask lots of questions this one isn't that bad so long as you're not behind).
Hello everyone. Here's another movie, but I've included a link this time in case you'd like to read further on the subject.
Watch the following video (see if you can find where I droped the negative). Hope you enjoy it.
Apparently it's harder to edit images than I had originally thought and so here it is Monday morning, I've got the plan, but no expertise in placing it in pretty pictures for you. The homework cube denined once again. Please consider this an invitation however to participate. If you have some expertise in manipulating images, please drop by and show me how, or if you'd like...you could be the 'Image Editor' for our blog. So without further ado...the PLAN for the WEEK.
Math 9
Pre-Calc 11 (we're going to do mental math every day this week)
Physics 12
As always these may change as the week progresses, but it will give you an idea of where we want to be by Friday.
For our classmates who are out travelling today I thought I'd take a quick few taps of the keyboard to answer a question regarding the work done when friction is present.
As the last few chapters have trained us to do, we look at situations from the perspective of a free body diagram (didn't know this did you). When we have a free body diagram we usually look at it from the perspective of the NET FORCE acting on it (or vice versa-if you're thinking NET FORCE on an object you're thinking of a free body diagram).
When it comes to our topic of WORK a free body diagram is not necessary (hence neither is the net force). Work is defined as the product of Applied force on an object, and the object's displacement (later there'll be a cosine of the angle between the force and the displacement, but for now we'll consider force and displacement to be in the same direction).
So, back to the question at hand, "How does friction effect the work done on an object?"
Your answer is, "It doesn't affect it at all." Even if the net force on an object is zero, it may still be moving with a constant velocity (thanks Mr. Newton). If it's moving with a constant velocity, the object will have a displacement. As the object has a displacement, and a force was applied through that displacement, then the person who applied that force has done work.
Hope that was helpful. Have a great weekend.
Tell me what you think of this as a possible place to put the basics for the week. I know 'Tuesday' got cut off a bit. I am still working on my photo editing skills (tricky stuff). If you have a favorite photo editing application pass it along I could use the advice.
A quick movie to highlight a few points in the process...
Don't forget to practice this. It comes up a lot!
With midterm exams and report cards finished with we're now on the long backstretch to finals. There is still a lot left to cover as well, so here we go!
Physics 12
Pre-Calculus 11
Math 9
At long last...apparently Teacher Tube doesn't like "page curl" effects... but here it is...
Today we discussed momentum and impulse. Try to remember the subtle difference between momentum and change in momentum
This week I'm hoping to cover quite a bit of material in all classes.
For Physics 12
In Math 9
Pre-Calc 11: This is going to be a quick module as there are only 5 lessons. We'll try to review Monday April 23 and test tuesday April 24.
This post is more for archiving than for any other purpose. Just trying to keep things all in the same place. Enjoy!
So my blogging efforts have been sporatic at times over the last year and for those who may be following my progress (by choice or becasue I'm always asking questions) I've arrived back at Blogger...with a new blog (it does some pretty neat things behind the scenes-if you're considering one I highly recommend the new Blogger). I used an analogy of moving to a new house the last time I switched, this move is analogous to finding a better location.
So I haven't quite unpacked everything yet like useful links for math and physics help, but I am already looking for contributors. If you have an interest in things mathematical or scientific let me know. Even if you simply have a good math or science story you could write a guest article. This was never intended to be all about me anyway...(I heard the collective sigh of relief).
For now I'm trying out a new design (the space theme thing...seemed different), if you have some ideas about this send them along. I'm looking for images to brighten the place up a bit so if you have some send them in.
Continue to check in from time to time...I'll hopefully be 'unpacked' soon and adding some new stuff shortly.
So here I am, changing horses in midstream again...some day I'm going to fall in!
