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Explaining Simple Machines (6 Books)
  • $169.74 $118.82
DaVinci Invention Land and Air Models
  • $77.61 $54.33
DaVinci Invention Sea Models
  • $61.19 $42.83
Engineering (9 Books)
  • $98.80 $69.16
Engineering in Action (15 Books)
  • $152.98 $107.09
Simple Machines (4 Books)
  • $28.54 $19.98
Time for Kids: Grades 2-3  (24 Books)
  • $255.59 $178.91
How Things Work (6 Books)
  • $55.04 $38.53
How Things Work - Popular Curriculum Themes (Level N) (6 Books)
  • $67.66 $47.36
STEM Perfect Pairing - Engineering Grades 2-3
  • $93.09 $65.16
STEM Perfect Pairing - Engineering Grades 4-5
  • $246.76 $172.73
STEM Perfect Pairing - Engineering Grades 6-8
  • $698.60 $489.02
STEM Perfect Pairing - Engineering Grades K-1
  • $170.80 $119.56