This is the lesson recording for Friday, June 25th, 2021 (Term 2, Week 8). The audio didn't record, so no video for this lesson. Again, we didn't have a chance to finish this lesson. This material is continued in Lesson 14, which is on metals and alloys. 

Items for This Lesson 

Recommended Follow Up

Remember you are NOT expected to complete all this work. It is just to give you choices and to allow for differentiation.