Weight/Mass Sets

Mass Set

Eight pieces. 50 g x 1 g. More.

Weighted Equivalency Set

Make the relationship between fractions, decimals, and percents easy for students to understand with colorful, weighted plastic numbers. Perfect for class demonstration or small-group activities, e... More.

Plastic Stacking Masses – Set of 80

These square masses work on any balance. Color-coded pieces make measurement easy (1 g = yellow; 5 g = orange; 10 g = purple; 20 g = pink). This 440 g set includes forty 1 g, twenty 5 g, ten 10 g, ... More.

Weighted Numbers

These red and blue numbers in 5 g weight increments (5 grams to 50 grams) let you teach about number value, weights, and early number skills. When used with a bucket balance you can demonstrate 2 i... More.

SAFE-T® Metric Weights™ – Set of 13

Precise, multi-sided weights with steel inserts, sealed in plastic with rounded edges for safety. Ideal for comparing U.S. Customary (English) weight to metric weight. Identified by different color... More.

SAFE-T® U.S. Customary Weights™ – Set of 13

Precise, multi-sided weights with steel inserts, sealed in plastic with rounded edges for safety. Ideal for comparing U.S. Customary (English) weight to metric weight. Identified by different color... More.

SAFE-T® Metric Weights™ – Set of 58

Precise, multi-sided weights with steel inserts, sealed in plastic with rounded edges for safety. Ideal for comparing U.S. Customary (English) weight to metric weight. Identified by different color... More.

Three Bear Family® Counting Set

Adorable plastic bears in three sizes and three weights for mass comparison, counting, and sorting. Bears are proportionately weighted so children can use them on a balance to make measurement disc... More.

Customary Weight Set

These easy-to-stack metal weights are hexagon shaped to prevent rolling. Set includes one 1-lb. weight, two 1/2-lb. weights, two 1/4-lb. weights, and eight 1-oz. weights. More.

Plastic Stacking Masses – Set of 40

These square masses work on any balance. Color-coded pieces make measurement easy (1 g = yellow; 5 g = orange; 10 g = purple; 20 g = pink). This 220 g set includes twenty 1 g, ten 5 g, five 10 g, a... More.