3.1.1 - properties of addition
Cuisenaire rods
1) Model with the rods
G + R = W + Y = P + Y =
2) If the sum exceeds Orange, use O + ______, where the excess color goes in the blank. Model with rods. Write just the letter.
K + E = N + D = K + K =
Model & answer # 3 in activity manual. What relationship do you notice?
5 c) Model with the rods
(P + R) + G = P + (R + G) = What do you notice?