arroz integral

Hydropower

Dan&Darci Advanced Professional Rock Tumbler Kit – with Digital 9-Day Polishing Timer STEM Gift for Kids All Ages, Geology Toy

Smartivity Telescope STEM Toy

Snap Circuits Motion Science Kits: Educational STEM Toy for Grade 2, Includes Wires, LED, Switch, Base, Rubber Band

Learning Resources Gears! Gears! Gears! Motorized Wacky Wigglers Gears Building Set, 130 Pieces

CONNETIX Magnetic Tiles Rainbow Rectangle Pack Building Blocks 18pc

PICASSO-TILES 376PCS Fort Building Kit, STEM Educational DIY Indoor & Outdoor Construction Play Toy, Castles, Tents, Playhouse for Toddler Kids

Costway All-in-One Wooden Kid's Art Easel Height Adjustable Paper Roll

Snap Circuits It Board Game Science Kits: Educational STEM Toy for Creativity & Engineering, Grades 1-4

Mini Magnetic Tiles 20 Pcs Travel Set, Educational Building Toys for Toddlers Ages 3+, Preschool Learning Sensory Activities

Math(s) Fix: An Education Blueprint for the AI Age - by Conrad Wolfram (Paperback)

PICASSO-TILES Magnetic Tiles for Kids, Construction STEM Building Blocks Educational Toy, Travel Size

Maß Und Integral - (De Gruyter Studium) 2nd Edition by René L Schilling (Paperback)

Motors & Generators

FAO Schwarz Lights From Anywhere Magic Trick Set

Clixo Tiny & Mighty Magnetic Building Set - Artist Edition

Junior Learning Alphabet Arc

PICASSO-TILES Clear Transparent Magnetic Tile Expansion Set, STEM Educational Building Blocks for Kids Age 3+, Creativity & Skill Development

hand2mind Take Home Manipulative Kit: Educational Tools for 3rd Grade, Creativity Learning, 316 Plastic Pieces

Playlearn Kaleidoscope Glitter Wand

4M Magnet Science STEM Kit

JuzToys 12 Pieces set Magnetic Fidget Sphere - Pentagons