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Ball clay based with specially graded hi-purity grogs
made up from 3 Modules ‘C’ placed side by side
The Galvanic Skin Response (GSR) logger sensor measures the conductivity of our skin
3m straight cable with left side exit
with folding lid and clip handles
NUMBER PUZZLES, SEE & SOLVE JIGSAWS, Addition and Subtraction, Age 3+, Set of 20 Festive/Tree-Decorations/Tree-Decorations Ball clay based with speciallyReinforce basic addition and subtraction skills with these beautifully made wooden puzzles, hand cut in the UK. The set includes 20 puzzles (10 addition and 10 subtraction), with 3 pieces each, that illustrate a simple calculation in both pictures and numbers. Complete the puzzle to solve the sum. Size of each puzzle: 140 x 120mm.
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