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How Do My Numbers Look to You?
This collection of problems provides many different interesting scientific contexts in which to develop the key skills of estimation and approximation, and to decide what units might be appropriate.
Does This Sound about Right?
Age
14 to 16
Challenge Level
Examine these estimates. Do they sound about right?
More or Less?
Age
14 to 16
Challenge Level
Are these estimates of physical quantities accurate?
Bigger or Smaller?
Age
14 to 16
Challenge Level
When you change the units, do the numbers get bigger or smaller?
Constantly Changing
Age
14 to 16
Challenge Level
Many physical constants are only known to a certain accuracy. Explore the numerical error bounds in the mass of water and its constituents.
Approximately Certain
Age
14 to 18
Challenge Level
Estimate these curious quantities sufficiently accurately that you can rank them in order of size
Related
Scientific Calculation
Estimation
Units
Averages
Trial and Improvement