Electric Fields

I was reading through section 13.7 and decided that it goes a little further than grade 11 requires. That means that we're at the end of the chapter and need to schedule a test. Given that I'm not back until Monday I'm thinking that the earliest will be Wednesday next week, perhaps Thursday. If you have other ideas or concerns email me before the weekend.

I liked how our 'make your own quiz' project went so I'd like to try it again. This time we'll take a little more time to make it a bit more of a finished product. For today and tomorrow I want you to make sure that your homework is finished...all of it. Then make up some questions for the chapter. We haven't talked about 13.5 at all so read that and we'll review it Monday.

I'd like at least one question for each section. That makes the total seven. I realize that for 13.1 and 13.2 there isn't much to ask about, but if you read the sections there might be something that "sparks" your interest. Be creative. If not, make a question that requires you to know something from those sections. For section 13.3 I'd suggest page 530 Table 13.1. Read about how to use a table of electrostatic strengths and make a question from that. If you're having difficulty try either the internet, email me, or wait until Monday and I'll work with you then.

The other sections should be fairly easy to make some questions on. Use the examples as a guide if you get stuck.

As before, please write up an answer key with solutions on a separate sheet with comments on your process of how to solve them. I'd like these in draft form for Monday, along with your completed homework. Monday we'll trade papers and try out each other's quiz (which is why it's really important to have these in a workable form for Monday).

Did I mention that Monday was the due date for having all of your homework and a working draft of your quiz? Have a great weekend and please be careful on the roads.

Exercise #33: Operations on Radicals

So this post is for those of you away with sports (good luck by the way). While you're away you may be able to keep up by taking a look at The Math Page. It covers everything we're going to discuss while you're away.

my new post

Here is my new post for today. I hope you're getting your homework done early...

Remember about the test on Tuesday.

Ahhh...Monday

Hello everyone.

I'm sorry that I can't be there today but I've listed some videos and files to help you with our new lessons. Please be sure to email me your questions so that I can help you.

Math 9

Pre-Calc 20

Physics 11: You have a study guide for Chapter 4 to work on. We'll go through it tomorrow when I'm back.

Exponent Laws

Today we will start with marking your homework from Friday...

Then watch the video for our new ideas today...

...and complete Extra Practice #4 for tomorrow.

The Sine Law -from Friday

From Friday...



And for today...

Some Physics Reminders

So, by way of text messaging a former student asked for some reminders about "forces and angles" in what I'm assuming is a unit or course in mechanics.

I'm not entirely sure of what exactly you're looking for but I'll take my best guess and you can reply below by leaving a comment about what you still need to know.

Forces are vectors. When you're determining the Net Force on an object you will need to use some trigonometry. Usually I find a good diagram helpful here since you can form a triangle out of the sum of two forces (provided they're not in the same or opposing directions)with the third side being their resultant.

From here you will need either the Sine Law, or the Law of Cosines. You can also use x and y components of the forces if you have more than two.

Explanations of the Sine Law and the Law of Cosines can be found by following the links.

If instead you're working with Inclined Planes (also involving forces and angles) you'll still want to draw a good diagram. With this topic, however, you'll be working with 'right angled trig' or as you may remember from high school the 'SOH CAH TOA' trigonometry.

The other topic I'm thinking you might be working with is Work. Work is the product of Force and displacement. Most questions in grade 12 involve the force and the distance being in the same direction, but if the force is at an angle to the displacement you will also need to include the cosine of the angle between them. The previous link may help.

I apologise for all of the references to wikipedia. On such short notice it's the best I can do. If you can post or email something more specific I could give you more detail. Hope this helped and good luck.

Parallel and Perpendicular Lines

For a full screen version click the title of this post

The Hyperbola

Do your best. See you Monday.

Some review on Logarithms...

...you can find HERE

Our first day back...(and a little testing with swf)

Exercise #22-Logarithmic Theorems I

Exercise #21-Logarithms

Reciprocal Functions

February 24 in Room 6

Pre-Calc 12: Your lesson is here. Make sure that if you get stuck on a question you look to the review questions. For exercise #11, those start around question #8.

Pre-Calc 10: Your lesson is here. I'll likely quiz you again early next week. Make sure you're keeping up with all of the questions in your assignments.

Math 9: Some review work for you to have complete for tomorrow along with 3.1, and 3.2. Make sure that you show your work on loose leaf.

Physics 11: Mark (click on the link for the answers) and hand in your 'Chapter 3' Assignments. If you think you deserve part marks put a question mark next to the question. Finish the 'Chapter 4' handout for tomorrow.

Graphing the Absolute Value Function

Finding the Equations of Lines (Slope/Intercept)

Slope-Intercept Method of Graphing Lines

Graphing Lines with Intercepts

The link above will take you to a good website that explains the idea of intercepts really well. Read it first, then take a look at the video below.

Factoring a Difference of Squares

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February 13

This week has been a difficult one because of the bad weather. We've been out of our routine and it will be difficult to get back into it after another long weekend. I've posted some notes for today for Pre-Calc 40, and Physics 11 to get us through the weekend.

Next week we'll try to get back into a routine, which will mean that every class will be having their weekly test at the end of next week. Study hard and be prepared for that.

Have a great weekend.

Feb 12-

The day's lessons

Pre-Calc 12 & Pre-Calc 10

Math 9: Please compete the review sheets (2.10 to 2.13) for tomorrow. Be sure to answer on loose leaf paper.

Physics 11

Division by Binomials

A few quick examples for exercise #8

Physics 11-Today's Instructions

The General Enters...

OK...sharpen the pencil and get some paper out...this one is long (two lessons really)

Freezing Rain-and some homework to try...

I know that not all of us will be able to look at this today, but if you find this and have some time will you please find your lesson listed below and take a look. It will save us some time later in the semester-when the weather is nice and being outside is more likely than it is today!

Pre-Calc 12

Pre-Calc 10

Physics 11

Physics 11-Position-time graphs

The link above (click the title of this post) will take you to one of my favorite sites for physics. It will explain the topic and give you some questions to try with a link to check your answers. At the bottom of each lesson there will be a link to advance to the next section. If you can, work your way through to the end of Lesson 4.

Bad Roads and Pre-Calc

So, on day two of bad roads I thought I'd make a quick post just in case you had your work at home with you. The truth of the situation is that if we don't cover this lesson now, we'll have to double up somewhere down the road.

The link above (click on the title of this post) will take you to a lesson on Trig equations-it solves equations in the general case. That is what the "n" is about-if you like you can ignore the "n" for now and we'll cover it tomorrow.

Enjoy the day!

Exercise #7: Slope

If you happen to have your work with you, here's a straight forward lesson to get out of the way.

PC 12-Exercise 4

The link above will take you to today's notes. I'm going to place a link to my first class page and try to post class notes regularly so that if you miss a class you can still check the blog.

Distance Between Points

Hi there dedicated math student...

Watch the video below and give exercise #4 a try. If there are questions you have that I don't get to in class today, you can leave a comment below and I can answer them here.

Let me know what you think by leaving a comment.

Physics 12 Exam tomorrow

Apparently the weather is supposed to warm up and I'm guessing that it'll be business as usual tomorrow. This means for you that you will have your exam tomorrow as planned. I've seen many of you already, but for those I haven't the link above will take you to the key for another practice exam.

Good luck. See you tomorrow.

Orbits

Today we discussed two types of orbit. Circular orbits (involving satellites around a planet), and elliptical orbits (planets around the sun).

For circular orbits we can equate centripetal force with the force due to gravity to arrive at a formula for orbital velocity:


While for planetary orbits we looked at Kepler's Laws.

I also gave you an old exam to study from so please use your time well this week since our exam is only a week this Friday away.