## Sunday, July 11, 2010

### Teaching Volume and Surface Area of Cylinders

You want to really give your students incentives to learn how to calculate the volume and surface area of a cylinder? Bring in cans of soda.

--Give them each a ruler and a can of soda.
--Tell them you need both the volume and the surface area of the can or they don't get to drink it
--Watch the percision to which they measure and calculate

Variation:

Don't like soda or drinks in the classroom? Use paper,

--Have them color it first
--Than tape it
--Than measure and calculate

### Using Sidewalk Chalk To Teach Scientific Numbers

Give each kid a worksheet with 5-10 scientific word problems. Have them draw a big square and put their name on it (like it was a real worksheet). Than have them write out each questions and answer it like so

### Differences Between Mean, Median, Mode and Range

Simply fold a piece of paper long ways (hotdog for you elementary teachers) and make three cuts. Have them write the word, than the definition than a picture like so

### Teaching Probability Of Events (Likely, Impossible, Certain, Etc)

This is an easy way of teaching your students to distinguish between Certain, Likely, 50/50, Unlikely and Impossible

## Saturday, July 10, 2010

### Pythagorean Via The Bleachers

Notice how the bleachers form a 3D triangle from the side view? The legs would be the height and the base whereas the hypotenuse would be the distance going down the bleachers.

--Giving each of your students rulers have them measure the base and height of the bleachers

--Next, have them estimate the hypotenuse via calculation

--Finally, have them measure the hypotenuse and see how close they were

### Create Math Cartoons

You can create films and strips through http://www.toondoo.com/ for free. This would be great for math labs or smart boards. Yet, you can also do this the old fashion way

Staple a bunch of cut up pages (cut to squares) together to form a small booklet. Then have your students write out the math problem like

2x + 5 = 10

--For every page have them rewrite the problem with only slight variations toward the solution.
--Keep doing this till the last page which shows the problem solved
--Finally, flip through the booklet like a cartoon and watch the problem solve itself

Use it a cheat sheet for the test!