Day 92: Parallelograms

Algebra started parallel/perpendicular lines today while geometry dove into exploring parallelograms.

The Geometry Teacher has some great explorations for several concepts in geometry. I pull his exploration on parallelograms and used it in class today.

It was fun to see students struggle in creating a parallelogram without any knowledge of their properties. There were a lot of methods used; I had to restrict students from creating rectangles/squares because they ALL jumped to that solution first.

After they created a parallelogram, they measured the sides/angles and taped them up to a whiteboard (I messed up in not asking them to spread them out further).

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Students then gallery walked and filled out the table attached to the worksheet.

We talked about the properties and came up with a list hitting four big properties.

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Tomorrow we will prove a couple of these and practice using them.

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