Thames & Kosmos Science Advent Calendar w/ 24 STEM Experiments $16 at Amazon $16 $40 Out-of-season sale! Amazon has the Thames & Kosmos Science Advent Calendar w/ 24 STEM Experiments on sale for $16 with free shipping on $35+ or with Prime. Materials for each experiment included in the 24 individual boxes. $16 retail: $40 Report Posted by Faraday04/15/2024 at 08:45 AM PT
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