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- A graded set of ten wooden rods, differing from one another in only one dimension - length. Increasing regularly in length, the shortest rod is 10 cm long and the longest is 100 cm long.
- DIY: Use red construction paper, cardstock, or sticks to make ten strips or prisms varying in length (increasing by 10 cm, starting from 10 cm to 100 cm); or stack same colored LEGO bricks to form 10 rods with varying length; or
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Classic Activities - Sensorial - Visual
