How Things Work by  "4 years old" and "MindWare"

(2 items)
Start-Up Circuits
Start-Up Circuits
1 Piece(s) #68521
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$24.95
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Hape Deluxe Experiment Kit – Junior Inventor STEM Construction Set
Hape Deluxe Experiment Kit – Junior Inventor STEM Construction Set
1 Piece(s) #14610769
$50.99
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