Grade 7: Tuesday group - Watch these videos:
Easier video on variables
Detailed video on independent, dependent and controlled variables
You can also check your thermometer sheet answers:
first page
second page
first page
second page
Friday group - no homework
Grade 8: Tuesday group only Complete this sheet. Beware the mathematical trickery! Question 2 is hard to follow mathematically.
Grade 9: Wednesday group - 30 minutes (maximum) on the series circuit sheet
Thursday group: no homework