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5" (216mm) Length: 7
If two identical cards have exactly one card in between them (a 'slamwich')
1" (104mm) Hex Size: 17mm
Pre-cut holes and illustrated step-by-step instructions make this an easy and fun craft with impressive results
Includes a 1/4 in
NG Cool Reactions! tayio 5" (216mm) Length: 7The National Geographic Cool Reaction Chemistry Kit has everything your children need to conduct five amazing experiments. They'll make messages appear and disappear, create fizzy, bubbling reactions, and more! A detailed experiment guide takes you step by step through each experiment and includes insight into the pH science and chemical reactions that make this kit so much fun!
US$ 212.50
US$ 130.00
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