Objective:
(1) Understand square roots; squares; estimate squares. (2) Do this manually and with a calculator.
Lesson:
(1) Summative square test (1-25). (2) Students compare the number of squares inside each large "square" on each side of their triangles to the calculated "square" of each. (3) Students see length of hypotenuse in "squares" (using graph paper) and determine the length (ex. 6.3 squares) rounded down and squared (ex. 6^2=36) and rounded up (ex. 7^2=49) which shows that the number of squares inside the square on the hypotenuse should be more than 36 but less than 49. (4) Students instructed to bring calculator NEXT Monday that has sin, cos, tan and their inverse (ie. sin-1) to class. (5) NOTES: square: to "square" is to give a number an exponenet (power) or two, or to multiply it by itself. (ex. 52 = 5 x 5 = 25) root: A root is a number that when multiplied by itself produces the square. (ex. √25 = 5)
Assignment:
(1) Students instructed to bring calculator NEXT Monday (April 21) that has sin, cos, tan and their inverse (ie. sin-1) to class. This is a NEW tool requirement. Students may also bring compasses for EC during tool checks. (2) Students make one equilateral triangle and one isosceles triangle on graph paper. Also make squares that fit on each triangle leg out of graph paper and tape these to the triangle. These two triangles and their 6 associated squares are due next class.