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Pure substances vs mixtures
Intro and lesson 1
Unit c review
Unit d review
Review of grade 8 science blog
Unit d - section 3.2 -- technology develops through change
Unit d - section 2.3 -- hydraulics
Unit d - section 2.3 -- external forces
Unit d - 2.2 external forces
Unit d - section 2.1 -- measuring forces
Unit d -section 1.1-1.2 -- classifying and function of structures
Unit d - section 2.2 --the science of work
Unit d - section 2.1 --machines make work easier
Unit d - section 1.2 -- the complex machine
Unit d - section 1.1