Use your skill and knowledge to place various scientific lengths in order of size. Can you judge the length of objects with sizes ranging from 1 Angstrom to 1 million km with no wrong attempts?

When you change the units, do the numbers get bigger or smaller?

Estimate these curious quantities sufficiently accurately that you can rank them in order of size

Which units would you choose best to fit these situations?

Get some practice using big and small numbers in chemistry.

Many physical constants are only known to a certain accuracy. Explore the numerical error bounds in the mass of water and its constituents.

Can you suggest a curve to fit some experimental data? Can you work out where the data might have come from?

PhysNRICH is the area of the StemNRICH site devoted to the mathematics underlying the study of physics

Find out why water is one of the most amazing compounds in the universe and why it is essential for life. - UNDER DEVELOPMENT

chemNRICH is the area of the stemNRICH site devoted to the mathematics underlying the study of chemistry, designed to help develop the mathematics required to get the most from your study. . . .

Work out the numerical values for these physical quantities.

This is the technology section of stemNRICH - Core.

Explore displacement/time and velocity/time graphs with this mouse motion sensor.

An introduction to a useful tool to check the validity of an equation.

In which Olympic event does a human travel fastest? Decide which events to include in your Alternative Record Book.

This is the area of the advanced stemNRICH site devoted to the core applied mathematics underlying the sciences.

Make an accurate diagram of the solar system and explore the concept of a grand conjunction.

Some explanations of basic terms and some phenomena discovered by ancient astronomers

Use trigonometry to determine whether solar eclipses on earth can be perfect.