Let's explore finding the area of a triangle.
The formula for the area of a parallelogram (we learned this today in class) is A=bh (Area=base times height). Write this down, it may help you later ;)
1. Draw a triangle on a piece of paper and cut it out (make sure it is big enough for you to work with). Now cut out another triangle that looks EXACTLY THE SAME! (I'd trace the first one and cut it out if I was you).
2. Can you put the two triangles together to form a very familiar shape? Glue the shape you formed in your math notebook.
3. Look at your new shapes. Based on what you know about area so far, describe how you would find the area of ONE of these triangles.
Repeat steps 1-3 for at least four other triangles.
4. Write a general rule for how to find the area of a triangle.
Go over HW
Teacher guide the class - as a reference p. 379-380
Go Math Pg. 377 #1-10
Go Math Pg. 381 #1-8
Practice Book P185
Practice Book P187