3-5
Two video clips illustrate communication about mathematics among a teacher and her students.
Pre-K-2, 3-5, 6-8, 9-12
Use this tool to create a spinner to examine experimental and theoretical outcomes.
6-8, 9-12
Use tiles to represent variables and constants, learn how to represent
and solve algebra problem. Solve equations, substitute in variable
expressions, and expand and factor.
6-8
This applet shows the relationship between the area of a parallelogram and the lengths of its sides.
6-8
Investigate how changes in the base and height of a trapezoid affect its area.
6-8
Use this tool to determine how the length of the base and the height of a
triangle, parallelogram, or trapezoid can be used to determine its area.
Pre-K-2, 3-5
Use counting strategies to make outfits for Bobbie Bear with different colored shirts and pants.
Click here to play Bobbie Bear in Spanish.
Pre-K-2, 3-5
Become confident in facts up to 12 x 12 using visual models that stress the conceptual
aspects of multiplication.
Pre-K-2, 3-5
Learn how to count, collect, exchange, and make change for coins by manipulating coins using an array representation.
Pre-K-2, 3-5
Play a matching game with different representations of equivalent items.
