Progress in Grade 9

Since it’s Vennsday we did another numeracy task with Venn diagrams. This time we had one circle for even numbers, one for multiples of 3, and one for square numbers.

After this task, we did some work on composite perimeter and area. This is an area of challenge for the class this term.

We needed to use some logic to determine the missing side lengths, and then find the area of each rectangle, and then add them up.

This question was a nice spicy one!

The side length is 20 for each side, but to determine the area we needed a bit of a hint.

A regular hexagon is made of 6 equilateral triangles, and the sides are all 20cm.

This is a nice diagnostic to see if students remember the pythagorean theorem. We’ll explore this more later, but we need to use it to find the height of each triangle.

We need to keep working on perimeter of composite shapes moving forward, but we are getting better with area.