Simple machines
Channel: Fernando Ortiz
Date: 2021-05-16

A Natural Science video about SIMPLE MACHINES: lever, wedge, wheel and axle, screw, inclined plane and pulley.

Other 4th-grade Primary education videos:

Light and Heat
https://youtu.be/pqdx8D7qraY

Forms of energy
https://youtu.be/MMUKJCQ_uWo

Sources of energy
https://youtu.be/hxv2UsPrbQ0

Mixtures
https://youtu.be/tiYNPD0HUDU

Physical changes
https://youtu.be/HkYtSnVDSIg

Matter: mass, volume & density
https://youtu.be/_gBYnH7dMWU

Vertebrate animals
https://youtu.be/XrCJf8TaAYs

Invertebrates
https://youtu.be/SYWQ3mHJ-wA

Plant nutrition and respiration: Photosynthesis
https://youtu.be/TYH_TS-eatc

Plant classification
https://youtu.be/R9jkZpJmLoc

Food chains and food webs
https://youtu.be/hC3NZkUmCFc

Elements of ecosystems
https://youtu.be/pQOLB71Udow

Nutrition 
https://youtu.be/0IPO2nMHfZ0​

The locomotor system
https://youtu.be/bwQ7aLQLEOc​

The five senses
https://youtu.be/bg16ZPUyUwo​

Living things and life functions
https://youtu.be/9UoD1f7HxmM​

Classification of living things: 5 kingdoms
https://youtu.be/7hLMRsBZ78E