I was asked for a source for more practice, especially on the mathematical aspects of these first four chapters. I’ve identified some online worksheets with answers. Let me know if you find these resources helpful.
http://www.math-drills.com/measurement/convert_centimeters_millimeters_001.pdf (mm and cm)
http://www.math-drills.com/measurement/convert_meters_centimeters_005.pdf (meters and cm)
http://www.math-drills.com/measurement/convert_all_grams_004.pdf (mg, g and kg)
http://www.math-drills.com/measurement/convert_all_volume_006.pdf (mL and L)
http://www.math-drills.com/measurement/convert_between_celsius_fahrenheit_negatives_005.pdf (temp conversions)
Density
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht27a.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht27b.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht27c.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht27f.htm
Specific Heat (Cp is used for the S.H. in our book – Specific Heat)
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht210a.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht210b.htm
http://www.fordhamprep.org/gcurran/sho/sho/worksheets/worksht210c.htm
Main source for all these worksheets:
http://www.fordhamprep.org/gcurran/sho/sho/lessons/lessindex2.htm