Tally Mark Addition

This example demonstrates addition using tally marks. Key mathematical concepts include addition and counting. The construction uses commands and objects such as Random, Roll_1, b, r, s, text1, a, U, V, b_1, W, Z, b_2, A_1, B_1, b_3, C_1, D_1, b_4, E_1, b_5, A, B, r_1, C, D, r_2, E, F, r_3, G, H, r_4, I, J, r_5, button1. Suitable for upper elementary or lower middle school students learning addition.