MathTacular! S01 E03 Counting

10 Counting Objects 11 Tape Measure Number Lines 12 Counting Race 13 Counting Backward 14 Hopscotch Counting 15 Count with Place Values 16 Which is More? 17 Wormholes & Warp-drives 18 Tally Marks: Flip Tally 19 Tally Marks: Plumbing