Detailed description
Number line; ticks at integers 0 to 12; √12 above the line with arrow pointing to the line between 3 and 4; √40 above the line with arrow pointing to the line between 6 and 7.
Squares
Number line; ticks at integers 0 to 12; √12 above the line with arrow pointing to the line between 3 and 4; √40 above the line with arrow pointing to the line between 6 and 7.