Learning to Think Mathematically With the Rekenrek A Resource for Teachers A Tool for Young Children Jeff Frykholm.
Operations with integers can be modeled using two-colored counters. Positive +1 Negative.
Warm-Up - 6 + - 4 = 5 X -3 = -4 X -4 = 6 + (-2) = -10 – (- 2) =
Integers with Manipulatives
