Compare and discuss graphs for different isotopes. How are the curves similar and different? What do the curves suggest about the rate of radioactive decay in general? Groups can challenge each ...

Sara and Beca learn about constructing a half-life graph with the help of both Ada ... use chocolate buttons to model the half-life decay of a radioactive element. Every time you throw the ...

Different radioactive isotopes have different half-lives. For example, the half-life of carbon-14 is 5,730 years, but the half-life of francium-223 is just 20 minutes. Graph of count rate against ...