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Crazy Contraptionsbuild Rube Goldberg machines that swoop spin stack and swivel with hands on engineering activitiesBookBằng Perdew, Laura
Được phát hành 2019Sách
Đặt Giữ -
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Biodiversityexplore the diversity of life on Earth with environmental science activities for kidsBookBằng Perdew, Laura
Được phát hành 2019Sách
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Wacky Contraptionsgadgets that whiz whoosh whirl and twist with hands-on engineering activities for kidsBookBằng Perdew, Laura
Được phát hành 2025Sách
Đặt Giữ -
