Gene Puzzles

Explore single-gene traits in humans. After viewing a video introducing genetic vocabulary, individuals identify their phenotype and possible genotypes of specific traits. They consider both dominant and recessive traits. This is the...

Young scientists use a worksheet to help them perform a lab on the decay of a radioactive element. The worksheet serves as both a task guide and a lab sheet for pairs of learners. This activity requires a calculator and has excellent...

Make your lesson on radioactive decay pop with this lab exercise. Using popcorn kernels spread over a tabletop, participants pick up all of those that point toward the back of the room, that is, those that represent decayed atoms. As the...

There are no tricks here! Young scholars learn about the concept of centripetal acceleration by studying the design of the snowboarding half pipe. A video lesson describes how the half pipe design affects the motion of the boarders.

[Free Registration/Login may be required to access all resource tools.] The half-life of a radioisotope, rates of radioactive decay and variation in half-lives in different radioisotopes.

Become familiar with the basic concepts of inheritance. Your junior high young scholars work through mulitple examples of crosses and calculate probabilities of trait occurance. The explain the concept that each parent contributes one...

In this half-life worksheet, learners use 100 pennies to simulate radioactive isotopes and half-life. They place the pennies in a box and shake the box. All pennies that turn up tails are removed from the box. They represent the isotopes...

In this half-life activity, students are given a particular mass of an isotope of cesium and its half life. They are to determine how much cesium will remain after 90 years. They are guided through the problem solving process.

In this activity, learners gain a better understanding of radioactive dating and half-lives by using M&Ms to demonstrate the idea of radioactive decay. They will be able to see how scientists can determine the age of rocks by looking...

There are different types of radioactive decay, and alpha decay is when there are too many protons in a nucleus. Here is a simulation that shows alpha particles being emitted from a polonium nucleus. Learners see how radioactive decay...