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2013 Apologia General Science (2nd ed)
2013 Changes
General Science Schedule Plus Errors
Instructions for using Plaster Experiments 6.3 and 7.1
Use 1 cup of dry plaster for 6.3, page 146. Use ½ cup of dry plaster for 7.1, page 162. Use cold water when mixing. Add Plaster of Paris to clear water in container. 1 cup plaster to scant ½ cup cold water. ½ cup plaster to scant ¼ cup cold water. If mixture is too thick – add more water by the ¼ spoonful. Will harden within 30 minutes. WARNING! Wash hands and surfaces thoroughly when finished!
Experiment 6.2, page 143. We have provided ½ cup of sand and ½ cup of gravel. Use ½ cup dirt from your yard or garden to complete the requirements of the experiment.
Apologia General Science Pre-2013
No Changes for 2008
2007 General Science Info