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Welcome to my math blog! The purpose of this blog is to help you stay informed about our learning and experiences that have taken place during our math class. I have also included links your child (and you) may want to use in order to supplement math learning in 5th grade.

Wednesday, September 30, 2015

Hands on Equations (Day 5)

We continued our study of basic algebra using our Hands-On Equations manipulatives.  We added a new twist today, we threw in subtraction!

On a problem such as:

5x - 3x + 2 = x + 5

Students first need to subtract 5x - 3x before setting the equation up on their scale.  Since 5x - 3x = 2x, the student only places 2x + 2 = x + 5 on the scale.

Then we followed the same procedures.  We brought down one "x" from each side leaving:  x + 2 = 5.

Next, we worked with the constants, removing 2 from each side leaving:  x = 3.

We replace the original equation on the scale:

2x + 2 = x + 5
2 x 3 + 2 = 3 + 5
6 + 2 = 8
8 = 8

We practiced a few more examples, and then students worked together or individually to complete 10 problems.  To view our examples, please following the link:  Hands-On Equations Day 5.

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