Students build understanding of place value and addition using virtual base-10 blocks representing ones, tens, and hundreds. Learners drag and drop blocks to represent numbers, solve addition problems, and practice regrouping across place values. Supports TEKS 2.2.A, 2.2.B, 3.2.A, 3.2.B, 3.2.D (place value and addition).
Skills: place value, regrouping, addition, number sense. Grades 2-3.