Downstairs Technology Small Production Center Of Gravity Conversion Roll Downhill DIY Handmade Physical Model Children's Student Teaching Aids

Material:Wooden Specification:210*215*90mm Whether can DIY:Yes Packaging:Other Whether multi-function: No Whether electric: No Ability to develop: hands-on brain Science toys type: physics Colour:Down the stairs Applicable age:Junior (7-14 years old) 3:Science experiment 2:Children's toys creative science education model 1:DIY science and technology small production