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Browse by Grade & Topic: Earth's Oceans and Water Effects
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See How FREE Gizmos WorkOcean Mapping
Use a sonar on a boat to remotely measure the depth of an ocean at various locations. Describe multiple points on the ocean floor using their latitude, longitude, and depth. View maps of...
Lesson Info Launch GizmoWater Cycle
Control the path of a drop of water as it travels through the water cycle. Many alternatives are presented at each stage. Determine how the water moves from one location to another, and...
Lesson Info Launch GizmoWater Pollution
Get to know the four main types of pollution present in the environment, and then look at a variety of real-world examples as you try to guess what type of pollution is represented by each...
Lesson Info Launch GizmoTides - Metric
Gain an understanding of high, low, spring, and neap tides on Earth by observing the tidal heights and the position of the Earth, Moon, and Sun. Tidal bulges can be observed from space, and...
Lesson Info Launch GizmoTides
Gain an understanding of high, low, spring, and neap tides on Earth by observing the tidal heights and the positions of the Earth, Moon, and Sun. Tidal bulges can be observed from space,...
Lesson Info Launch GizmoConvection Cells
- New!
Explore the causes of convection by heating liquid and observing the resulting motion. The location and intensity of the heat source (or sources) can be varied, as well as the viscosity of...
Lesson Info Launch GizmoFreezing Point of Salt Water
Control the temperature of a beaker of water. As the temperature drops below the freezing point, a transformation of state will occur that can be viewed on a molecular level. Salt can be...
Lesson Info Launch GizmoCoral Reefs 1 - Abiotic Factors
Explore the abiotic factors that affect Caribbean coral reefs. Many factors can be manipulated in this simplified reef model, including ocean temperature and pH, storm severity, and input...
Lesson Info Launch GizmoCoral Reefs 2 - Biotic Factors
In this followup to the Coral Reefs 1 - Abiotic Factors activity, investigate the impacts of fishing, disease, and invasive species on a model Caribbean coral reef. Many variables can be...
Lesson Info Launch GizmoCarbon Cycle
Follow the path of a carbon atom through the atmosphere, biosphere, hydrosphere, and geosphere. Manipulate a simplified model to see how human activities and other factors affect the amount...
Lesson Info Launch GizmoObserving Weather (Metric)
How do scientists measure and describe the weather? In this introductory lesson, students will practice using a thermometer, anemometer, rain gauge, and hygrometer to record weather...
Lesson Info Launch GizmoObserving Weather (Customary)
How do scientists measure and describe the weather? In this introductory lesson, students will practice using a thermometer, anemometer, rain gauge, and hygrometer to record weather...
Lesson Info Launch GizmoComparing Climates (Metric)
- New!
Compare average temperatures, precipitation, humidity, and wind speed for a variety of locations across the globe. Explore the influence of latitude, proximity to oceans, elevation, and...
Lesson Info Launch GizmoComparing Climates (Customary)
Compare average temperatures, precipitation, humidity, and wind speed for a variety of locations across the globe. Explore the influence of latitude, proximity to oceans, elevation, and...
Lesson Info Launch GizmoFlood and Storm-Proof Homes
- New!
Build a home to survive a flood or a hurricane and protect the people inside. Choose materials and a design for the foundation, frame, walls, and roof of the house. Add "extras" such as...
Lesson Info Launch GizmoRiver Detective: The Case of the Missing Shad
- Stem Case
An important fish species, the American Shad, has disappeared from the James River in Virginia. Students take on the role of a junior River Watch member to investigate the shad population’s...
Lesson Info STEM CasesSorry, we could not find any Free Gizmos to show you for this Grade/Topic!
How Free Gizmos Work
Start teaching with 20-40 Free Gizmos. See the full list.
Access lesson materials for Free Gizmos including teacher guides, lesson plans, and more.
All other Gizmos are limited to a 5 Minute Preview and can only be used for 5 minutes a day.
Free Gizmos change each semester. The new collection will be available January 1 and July 1.
About STEM Cases
Students assume the role of a scientist trying to solve a real world problem. They use scientific practices to collect and analyze data, and form and test a hypothesis as they solve the problems.
Each STEM Case uses realtime reporting to show live student results.
Introduction to the Heatmap
STEM Cases take between 30-90 minutes for students to complete, depending on the case.
Student progress is automatically saved so that STEM Cases can be completed over multiple sessions.
Multiple grade-appropriate versions, or levels, exist for each STEM Case.
Each STEM Case level has an associated Handbook. These are interactive guides that focus on the science concepts underlying the case.
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