A warm-up for the start of class, before students play or start the worksheet. It reviews squares, cubes and number lines using things students see every day, then asks them to think ahead to estimating a square root. Two tickets print on each page; cut along the dashed line. The answer key prints on its own page after it.
1. A square floor uses 16 tiles. How many tiles long is each side?
tiles
2. A cube is built from blocks, 2 on each edge. How many blocks?
blocks
3. Mark 7.5 on the number line. Which whole numbers is it between?
and
4.Think ahead: a square has an area of 30. Its side is not a whole number. Between which two whole numbers is it? How do you know?
Answer Key: Entry Ticket
Back to the Side
4 tiles (4 × 4 = 16)
2 × 2 × 2 = 8 blocks
Halfway between 7 and 8
Between 5 and 6: 5 × 5 = 25 is too small and 6 × 6 = 36 is too big. That's today's lesson: √30 is between 5 and 6.
Quick read: 8 on #1 means the student halved instead of finding the root; 6 on #2 means they multiplied 2 × 3. Use #4 to open the lesson, then try it in Rooted to the Spot.