Are there model answers for the lessons?

Yes, there are! You can find links to the suggested answers in "Teacher notes" section of each unit:

Teacher notes contain a number of useful bits of information, including printable handouts in PDF format, as well as model answers!

Cosmos Lessons

With our original unit format, answers to all lessons are bundled into a single PDF:

The new unit format breaks answers up and they can be downloaded on a per-lesson basis:

Double Helix Lessons by CSIRO

DHL groups them together like this:


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