Friday, March 27, 2009


Today we worked at chromatography at Petite. Use coffee filters or paper towel to break apart secondary colours. Using water soluble markers, place two dots on your paper. Then place the paper in a glass of water so that the water wicks up the paper and and seperates the ink into its different dyes.

You can also test kool-aid to see which kinds of dyes have been used.

Thursday, March 5, 2009

Long Division

I have just added a page to my web site on long division. I not certain what the method on the left is called but find it a vast improvement over the method we were taught in school.
This method may require more steps but it is much easier to understand.
Let's look at the problem . Imagine I am dividing 789 widgets among 9 people.
Students can do long division without knowing all their times tables.
I can solve any problem if I know my 1,2,5, and 10 times tables. I start by giving each person 50 widgets, then 20, 10 etc.
The problem can be solved in all manner of ways.
I can start by giving each person 70 widgets or I could give them 10 widgets 7 times.

Monday, March 2, 2009

Right Handed Cat?

I placed a treat in a glass and recorded which paw Roxie used to get the treat. In 5 tests she used her right paw every time.