Grade 4 ~ polygons are closed shapes with similar attributes that can be described, measures and compared
Grade 5 ~ Closed shapes have area and perimeter that can be described, measured, and compared
Grade 6 ~ Properties of objects and shapes can be described, measured, and compared using volume, area, perimeter and angles
Grade 7 ~ The constant ratio between the circumference and diameter of circles can be used to describe, measure and compare spatial relationships.
For the Win 3 Act lesson (gr. 5)
Packing Sugar 3 Act lesson (gr. 6)
Fun Math and Puzzle Websites:
Visual Math Puzzles
Every colorful page of Christopher Danielson’s children’s picture book, Which One Doesn’t Belong?, contains a thoughtfully designed set of four shapes. Each of the shapes can be a correct answer to the question: “Which one doesn’t belong?” Because all their answers are correct answers, students naturally shift their focus to justifications and arguments based on the shapes’ geometric properties.