Estimate these curious quantities sufficiently accurately that you can rank them in order of size
Work out the numerical values for these physical quantities.
When you change the units, do the numbers get bigger or smaller?
Which units would you choose best to fit these situations?
Are these estimates of physical quantities accurate?
Work with numbers big and small to estimate and calulate various quantities in biological contexts.
Work with numbers big and small to estimate and calculate various quantities in physical contexts.
How much energy has gone into warming the planet?
How many generations would link an evolutionist to a very distant
Examine these estimates. Do they sound about right?
Work with numbers big and small to estimate and calculate various quantities in biological contexts.
Is this eco-system sustainable?
How would you go about estimating populations of dolphins?
Could nanotechnology be used to see if an artery is blocked? Or is this just science fiction?
Practise your skills of proportional reasoning with this interactive haemocytometer.
Is it really greener to go on the bus, or to buy local?
Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?