Students explore number composition by pairing addends that combine to form target sums, including making ten, in this interactive simulation. Learners manipulate number pieces to discover multiple ways to build the same total, reinforcing place value and number relationships. Supports TEKS 1.5.B, 2.4.B, 3.2.B and aligns with Common Core 1.OA.C.6 and 2.NBT.B.5 (make a ten, addition strategies).
Skills: number composition, addition strategies, place value, number sense. Grades 1-3.