Cargando…
Simple machines!: with 25 science projects for kids
You might not think you're using a simple machine when you zip up your coat, but it's true! Simple Machines! With 25 Science Projects for Kids introduces readers ages 7 to 10 to the six simple machines recognized as crucial to human civilization: planes, pulleys, screws, wedges, and wheels...
| Autores principales: | , |
|---|---|
| Lenguaje: | eng |
| Publicado: |
Nomad Press
2019
|
| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/2698712 |