Creating gestures for core knowledge is a common challenge in WBT. For example, a gesture for active verbs is churning your arms like you are a steam engine; a gesture for passive verbs is folding your arms. Invent and describe gestures for three core knowledge terms (and don’t copy any existing gestures from WBT!).
Congruent - means two shapes are same shape and same size (I'll make a circle with my thumb and index finger on both hands. Then I'll overlap the circles, and then I'll pull them a part.).
Invertebrates – animals that don't have a skeleton (bending elbows inwards so arms are across body lace fingers together. While fingers are laced wiggly arms like a worm.)
Tentacles – extra appendages that are flexible (stick arms out as if making a “T”, and then wiggle arms like an octopus)
Flat surface - smooth area with no curves or bumps (close hands,without clasping or lacing fingers, parallel to the ground. Rub top hand over bottom hand twice)
Edge – where two flat surfaces meet (one hand parallel to the ground, turn other hand vertical to ground, placing pinkies together. Hands should look like an “L”)
Weathering – breaking down of the mineral (form an “L” with both hands, then connect thumbs to make a “w” as you say weathering. When you give the definition, turn the “w” in rain – put hands in air and wiggle fingers as you move hands downward.)
Erosion – breaking down and moving from place to place (Using ASL make an “e” with one hand when you say erosion. When you give the definition, with your other hand pretend to move something from one side to the other side.)
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