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