Monday, November 9, 2009

Section 6.2

In section 6.2 we covered operations with decimals. We worked a lot with decimal squares and shaded in areas that represent numbers. I learned the visual way for decimal representation and have a different understanding of how decimals work. Especially in the area of multiplication. We used our index cards to represent the multiplication of decimals using area diagrams. This was a helpful exercise and as we went around the room to see the different area diagrams. It helped me have more practice in figuring out which decimals were being multiplied.

The area diagrams are a great tool for teaching students. It would be cool to have some sort of colored transparency paper or something with the grids of the decimal representation. If you used primary colors (for example yellow and blue) you could put the yellow transparent paper down to represent a decimal (.6), and then lay down the blue transparent paper down over the blue to represent the other decimal you are representing (1.3). The shaded area of yellow and blue that makes green would show your answer (.78). This would be a great way visually to separate the decimal representation and to show the overall answer. This is also a great way for students to use manipulatives (kind of like how we do).

I also found this game for kids on this website. It is a way to show addition with decimals and is a good resource.

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