Difficulty of assembly: 🔧🔧🔧 (5 points are the most difficult) The book contains detailed graphic steps to teach you how to make a mobile and aerodynamic air cannon, with a...

Difficulty of assembly: 🔧🔧🔧 (5 points are the most difficult) Build your own clamp figure machine by building the frame, wrapping the rope around the pulley system, and attaching the...

Difficulty of assembly: 🔧🔧🔧🔧 (5 is the most difficult) This is a dynamic and creative game book that allows children to build a real candy machine and learn about mechanics...

Difficulty of assembly: 🔧🔧🔧🔧 (5 is the most difficult) DIY Science Experiment・Circuit Machine DIY Gear Spinning Target Educational Science Kit that provides simple physics to help understand circuit diagrams and...

Difficulty of assembly: 🔧🔧🔧🔧 (5 is the most difficult) DIY Science Experiment・Circuit Machine DIY Gear Plotter Experiment is a DIY (Do It Yourself) educational science kit that provides simple physics...

Difficulty of assembly: 🔧🔧🔧🔧 (5 is the most difficult) DIY Science Experiment・Circuit Machine The DIY Electromagnetic Maze Experiment is a DIY (Do It Yourself) educational science kit that provides simple...

Difficulty of assembly: 🔧🔧🔧🔧🔧 (5 is the most difficult) Scientific assembly experiment・Three-in-one hydraulic manipulator without motor・No battery required・Safe and reliable Three-in-one free replacement, lots of fun Three-in-one hydraulic mechanical arm,...

Difficulty of assembly: 🔧🔧 (5 is the most difficult) Build a small world layer by layer Natural cognition｜Self-cognition｜Spatial cognition Levels gradually increase from difficult to easy The fifth layer: clothing...

Difficulty of assembly: 🔧🔧 (5 is the most difficult) Build a small world layer by layer Natural cognition｜Self-cognition｜Spatial cognition Levels gradually increase from difficult to easy The fifth layer: clothing...

Difficulty of assembly: 🔧🔧 (5 is the most difficult) Build a small world layer by layer Natural cognition｜Self-cognition｜Spatial cognition Levels gradually increase from difficult to easy Fifth layer: little butterfly...

Difficulty of assembly: 🔧🔧 (5 is the most difficult) Build a small world layer by layer Natural cognition｜Self-cognition｜Spatial cognition Levels gradually increase from difficult to easy Fifth floor: big frog...

Difficulty of assembly: 🔧🔧🔧 (5 points are the most difficult) STEAM Education｜Physical Science｜Circuit Knowledge｜Manual Ability｜Science and Technology Creativity The American expert team developed the recommendation of the North American Education...