S-3209T Dry-Erase Board Compass黑板大圓規
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S-5983T Clinometer 測斜器
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| Large
classroom demonstration compass with metric and standard
measurements. Use with a dry-erase marker. Great for drawing
geometric patterns, measuring angles, drawing straight lines,
drawing angles, etc. Suction cups to the dry-erase board to keep
in place. Rotates freely on the board once suction cupped. Size
19-3/4" L x 4" W. Includes guide.
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| Determining
heights of trees, buildings or other structures, and the depth
of valleys is simple with this sturdy measuring device. Students
point the clinometer at the top of a tree or building, pull the
trigger, wait for the graduated disc to stop spinning, and then
read the angle on the protractor. With this information,
students can then calculate height by using the formula found in
the guide included. Made of durable plastic for heavy classroom
use. |
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S-6150T Polyhedra Dice多面體的骰子 |
S-6020T Dice Classroom Assortment多面體的骰子課室組
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| Pkg. of 6
different polyhedra dice in assorted colors. May be used for
games, probability exercises, etc. Set includes one each of 4-,
6-, 8-, 10-, 12-, and 20-sided dice.
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| Large
assortment of 97 dice including both traditional cube-style and
polyhedra dice. Use for activities in probability, games, and
for reinforcing math skills. Thirty-six 20-sided, seven
12-sided, twenty-eight 10-sided, seven 8-sided, ten 6-sided, and
nine 4-sided. Colors may vary.
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ST-13Teaching Abacus 教學用算盤 13檔(71 X 33 X 6cm)
ST-450Teaching Abacus 教學用算盤 21檔(111.5 X 33 X 6cm)
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