April 30 to May 4

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

• Monday-5.7 quiz: 5.8: pg 201 #1-58 (evens or odds...I'm not sure yet)
• Tuesday-MM#14; 5.9: Pg 203 #10-48
• Wednesday-MM#15; 5.10: Pg 205 #1-39 (practice makes perfect-especially in this chapter)
• Thursday-MM#16; Quiz 5.10; Begin chapter review pg 212: all
• Friday-MM#17; 5.11: Pg 208 #1-40

Pre-Calc 11 (we're going to do mental math every day this week)

• Monday: Lesson 2
• Tuesday: Lesson 3
• Wednesday: Lesson 4
• Thursday: Lesson 5 (quiz up to lesson 4)
• Friday: Lesson 6

Physics 12

• Monday: 9.5
• Tuesday: 9.6 (Quiz)
• Wednesday: 9.7
• Thursday: 9.8/9.9(Quiz)
• Friday: Chapter 9 Review (Test Monday)

As always these may change as the week progresses, but it will give you an idea of where we want to be by Friday.

Work & Friction

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.

Testing the homework cube

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.

Factoring Trinomials

A quick movie to highlight a few points in the process...

Don't forget to practice this. It comes up a lot!

April 23-27

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

• Monday-8.4: Conservation of momentum in two dimensions.
• Tuesday-Review of Chatper 8
• Wednesday-Test Chapter 8 (I'll postpone this until Friday if the class feels it'd be better for them, but we'll start Chapter 9 here then)
• Thursday-9.2 & 9.3: Work and Power.
• Friday-9.4 & 9.5: Kinetic and Gravitational Potential Energy.

Pre-Calculus 11

• Monday-Review previous lessons & introduce Polygons
• Tuesday-Review
• Wednesday-Review
• Thursday-Test Module 4
• Friday-Begin Module 5

Math 9

• Monday-5.6: Factoring Trinomials
• Tuesday-5.7: Special Product
• Wednesday-5.8: Factoring a Difference of Squares
• Thursday-5.9: Perfect Squares
• Friday-5.10: Products of Polynomials (test comming up next week)

Radius & Chord

At long last...apparently Teacher Tube doesn't like "page curl" effects... but here it is...

test post

Greatest Common Factor (5.1)

Today's assignment is #1-42 on page 184

Notes on Momentum and Impulse

Today we discussed momentum and impulse. Try to remember the subtle difference between momentum and change in momentum

The Plan This Week...

This week I'm hoping to cover quite a bit of material in all classes.

For Physics 12

• Monday-6.5 (quick overview of 'how to solve'), 8.1 and 8.2.
• Tuesday-8.3: Conservation of Momentum
• Wednesday-8.4: Conservation of Momentum in 2 dimensions
• Thursday-Chapter 6 Test (if time permits I'll quiz sections 8.1, 8.2, and 8.3)

In Math 9

• Monday-5.1: Greatest Common Factors
• Tuesday-5.2: Factoring Expressions
• Wednesday-5.3 and 5.4: Multiplying & Dividing a Polynomial by a Monomial (quick quiz on 5.1 and 5.2
• Thursday-5.5: Binomial Products

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.

• Monday-Lessons 1 & 2: Introduction to Circle Geometry
• Tuesday-Lesson 3: Angles & Arcs of Circles
• Wednesday-Lesson 4: Properties of Tangents (I'd like to quiz the first 2 lessons either here or Thursday...so be ready)
• Thursday-Lesson 5: Exploring Polygons

Notes For Pre-Calculus 11

This post is more for archiving than for any other purpose. Just trying to keep things all in the same place. Enjoy!

Ah...there's no place like...home?

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.

Test post for Teacher Tube

OK...is this thing on?

Test Post for colour

So here I am, changing horses in midstream again...some day I'm going to fall in!