Estimating Square Roots with Visual Models

What is the square root of 16?

• 6

• 3

• 4

• 5

What is the square root of 25?

• 7

• 5

• 4

• 6

How many steps are there from 16 to 25?

• 10

• 9

• 8

• 7

What is the estimated square root of 19?

• 5

• 4

• 4.5

• 4.33

Why does the estimation of the square root of 19 feel a bit funny?

• Because the squares are too small

• Because the squares are not aligned

• Because the squares are hanging out

• Because 19 is not a perfect square

What concept is introduced to better estimate the square root of 19?

• Decimal points

• Whole numbers

• Fractional side lengths

• Perfect squares

What is the square root of 36?

• 5

• 5.5

• 6

• 6.5

How many spaces are there between 25 and 36?

• 11

• 9

• 12

• 10

If you know the square root of 25, how can you find the square root of 36?

• By adding 9

• By adding 10

• By adding 12

• By adding 11

What is the final estimated square root of 36?

• 5.5

• 6

• 6.5

• 5