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