150Operations and Algebraic Thinking: Addition and Subtraction Math Can be used with our Primary Bucket Balance. See pg. 177. Weighted Numbers Fun, tactile approach to teaching beginning operations and greater than/ less than! Each color-coded number is weighted in 5 g increments (5 g–50 g) and features a number word spelled out on the back. Numbers 1–10 each measure 3"L x 1⁄2"W x 2"H. Grades PreK+ | Ages 3+ SMALL PARTS (1). Not for < 3 yrs. LER 2049 10 Pieces $17.99 LER 1521 STEM ML Primary Bucket Balance $19.99 1 Manipulate the balance and weights to gain insight into abstract number and operations concepts, algebraic equations, and more. Includes 8 1⁄2"H balance, twenty 10 g weights, labels, and Activity Guide. Grades 1+ | Ages 6+ SMALL PARTS (1). Not for < 3 yrs. LER 0100 $19.99 Penguins on Ice™ Math Activity Set Reinforce counting, patterning, sorting, operations, and base ten! Bars hold 10 penguins each and connect 2 ways—horizontally (number line) or vertically (hundred grid). Includes 10 plastic ice bars (12"L x 1"H), 100 plastic penguins in 10 colors, and Activity Guide. Grades K+ | Ages 5+ SMALL PARTS (1). Not for < 3 yrs. LER 3311 $37.99 ML Math Balance 10 + 3 = 13 STEM ML
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