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With over 500 online simulations, virtual labs, and interactive cases for math and science—there’s a Gizmo for just about everybody. Let’s find yours.

Nuclear Reactions

5 Minute Preview

Explore examples of nuclear fusion and fission reactions. Follow the steps of the proton-proton chain, CNO cycle, and fission of uranium-235. Write balanced nuclear equations for each step,...

Lesson Info Launch Gizmo

Nuclear Decay

5 Minute Preview

Observe the five main types of nuclear decay: alpha decay, beta decay, gamma decay, positron emission, and electron capture. Write nuclear equations by determining the mass numbers and...

Lesson Info Launch Gizmo

Average Atomic Mass

  • New!

5 Minute Preview

The atomic mass for each element listed in the periodic table is actually the weighted average mass of all of the different isotopes of the element. In the Average Atomic Mass Gizmo, use a...

Lesson Info Launch Gizmo

Isotopes

  • New!

5 Minute Preview

Explore what isotopes are by adding protons and neutrons to the nucleus of an atom. Plot both stable and radioactive isotopes on a graph of neutrons vs. protons, and explore how the...

Lesson Info Launch Gizmo

Half-life

5 Minute Preview

Investigate the decay of a radioactive substance. The half-life and the number of radioactive atoms can be adjusted, and theoretical or random decay can be observed. Data can be interpreted...

Lesson Info Launch Gizmo

Energy Conversions

5 Minute Preview

Where does energy come from? How does energy get from one place to another? Find out how electrical current is generated and how living things get energy to move and grow. Trace the path of...

Lesson Info Launch Gizmo
Nuclear Reactions
Nuclear Decay
  • New!
Average Atomic Mass
  • New!
Isotopes
Half-life
Energy Conversions

Sorry, we could not find any Search Results to show you for Free Gizmos!

Sorry, we could not find any Search Results to show you for STEM Cases!

Screenshot of Nuclear Reactions Gizmo

Nuclear Reactions

5 Minute Preview

Explore examples of nuclear fusion and fission reactions. Follow the steps of the proton-proton chain, CNO cycle, and fission of uranium-235. Write balanced nuclear equations for each step, and compare the energy produced in each process.

Lesson Info Launch Gizmo
Screenshot of Nuclear Decay Gizmo

Nuclear Decay

5 Minute Preview

Observe the five main types of nuclear decay: alpha decay, beta decay, gamma decay, positron emission, and electron capture. Write nuclear equations by determining the mass numbers and atomic numbers of daughter products and emitted particles.

Lesson Info Launch Gizmo
Screenshot of Average Atomic Mass Gizmo

Average Atomic Mass

  • New!

5 Minute Preview

The atomic mass for each element listed in the periodic table is actually the weighted average mass of all of the different isotopes of the element. In the Average Atomic Mass Gizmo, use a mass spectrometer to separate an element into its isotopes. Then, calculate the average atomic mass by considering the mass and abundance of each isotope.

Lesson Info Launch Gizmo
Screenshot of Isotopes Gizmo

Isotopes

  • New!

5 Minute Preview

Explore what isotopes are by adding protons and neutrons to the nucleus of an atom. Plot both stable and radioactive isotopes on a graph of neutrons vs. protons, and explore how the neutron:proton ratio of stable isotopes changes from lighter to heavier elements.

Lesson Info Launch Gizmo
Screenshot of Half-life Gizmo

Half-life

5 Minute Preview

Investigate the decay of a radioactive substance. The half-life and the number of radioactive atoms can be adjusted, and theoretical or random decay can be observed. Data can be interpreted visually using a dynamic graph, a bar chart, and a table. Determine the half-lives of two sample isotopes as well as samples with randomly generated half-lives.

Lesson Info Launch Gizmo
Screenshot of Energy Conversions Gizmo

Energy Conversions

5 Minute Preview

Where does energy come from? How does energy get from one place to another? Find out how electrical current is generated and how living things get energy to move and grow. Trace the path of energy and see how energy is converted from one form to another.

Lesson Info Launch Gizmo

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© 2025 ExploreLearning. All rights reserved. Gizmo and Gizmos are registered trademarks of ExploreLearning. STEM Cases, Handbooks and the associated Realtime Reporting System are protected by US Patent No. 10,410,534

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Find Gizmos
  • FREE Gizmos
  • NEW Releases
  • STEM Cases
  • Browse by Standard
  • Browse by Grade & Topic
  • Browse by Core Curriculum
About Gizmos
  • What's a Gizmo?
  • About STEM Cases
  • What are Gizmos Investigations?
  • Take a Tour
  • Supporting All Students
  • How to Get Gizmos
  • Testimonials
  • K-5 Science
Research
  • The Impact of Gizmos on Student Achievement
  • The Research Behind Gizmos
Support
  • Professional Development Overview
  • Meet the Team
  • Course Catalog
  • Help Center
  • Site Status
Resources
  • Popular Gizmos Collections
  • Educator Resource Hub
  • Success Stories
  • Insights
Get More Info
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  • Request Purchasing Info
  • Request a Demo
  • Request a Pilot
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© 2025 ExploreLearning. All rights reserved. Gizmo and Gizmos are registered trademarks of ExploreLearning. STEM Cases, Handbooks and the associated Realtime Reporting System are protected by US Patent No. 10,410,534

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