Open Middle®
Directions: Draw three rectangles with a perimeter of 20 units. Source: Dan Meyer
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Rectangles: Maximizing Area
Directions: What is the greatest area you can make with a rectangle that has a perimeter of 24 units? Source: Robert Kaplinsky
Read More »Rectangles: Maximizing Perimeter
Directions: What is the greatest perimeter you can make with a rectangle that has an area of 24 square units? Source: Robert Kaplinsky
Read More »Squares: Perimeter v. Area
Directions: How can you tell which square is bigger: a square with a perimeter of 25 units or a square with an area of 25 square units? Source: Robert Kaplinsky
Read More »Rectangles: Perimeter v. Area
Directions: How can you tell which rectangle is bigger: a rectangle with a perimeter of 24 units or a rectangle with an area of 24 square units? Source: Robert Kaplinsky
Read More »Identify a Fraction on a Number Line
Directions: Label the point where 3/4 belongs on the number line. Be as precise as possible. Source: Inspired by Illustrative Mathematics
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