James Madison, under the pen name “Publius,” justifies the need for an American Republic in Federalist Paper 10, which is perhaps one of the most influential contributions to the Federalist Papers. Readers examine his perspective with...

In this radioactivity instructional activity, students read about scientists who contributed to the discovery of radioactivity and radioactive elements. They read about Marie Curie and her contributions to science and the unit the...

In this thunderstorm worksheet, students read about thunder and lightning and the forces behind both. They also read about the timing difference between thunder and lightning. Students answer three critical thinking questions about...

In this radiochemistry worksheet, high schoolers read about how scientists learn more about elements using radioactive isotopes. Students answer three critical thinking questions about the reading and radiochemistry.

Have your class supplement their knowledge on the Himalaya mountain range. In a brief handout, they read about the land masses that collided to form the Himalayas and other mountain ranges. It  also touches briefly on the Earth's...

In this materials for bicycle frames worksheet, high schoolers read about the various materials that have been used to construct bicycles and the pros and cons of each. They answer four critical thinking questions about the reading and...

In this wave energy activity, learners read about the energy created by water movement and how it is utilized to create electrical energy through two ocean wave energy converters. They answer three critical thinking questions about the...

In this universe worksheet, students read about the big bang theory and the evolution of the stars from the elements. Students answer four critical thinking questions about the beginnings of our universe.

In this ozone worksheet, students read about the ozone layer, its make-up and its depletion. They answer three critical thinking questions about ozone and the ozone layer.

In this fertilizer instructional activity, students read about natural and manufactured fertilizers. They answer four critical thinking questions about fertilizers and their use.

In this fireworks worksheet, students read about pyrotechnics and the chemical make-up of fireworks. They are given a chart of elements and the colors they emit. Students answer three critical thinking questions about fireworks and their...

In this history of heating worksheet, students read about the different ways of heating rooms over time. They answer three critical thinking questions about conduction, convection and heating.

In this conservation of energy worksheet, students read about the law of conservation of energy and about energy distribution. They answer three critical thinking questions about what the law of conservation of energy means to us for...

In this batteries worksheet, students read about how batteries work and the types of batteries. They answer three critical thinking questions about batteries and their use as alternate-fuel sources.

In this Little Ice Age instructional activity, students read about changes in weather and temperature resulting in changes in rain fall and glacier movement. Students answer three critical thinking questions about the Little Ice Age that...

For this digital television worksheet, students read about the advantages of using digital television. They answer three critical thinking questions about the advantages and disadvantage of digital television.

In this mountaineering and acclimatization worksheet, high schoolers read about the changes that take place in the blood as the body acclimatizes to high altitude. They answer three critical thinking questions about acclimatization.

In this Plinian eruptions worksheet, students read about the types of volcanic eruptions and about Gaius Plinius Secundus who the Plinian eruption was named after. Students answer four critical thinking questions about volcanic eruptions.

In this sources of weathering worksheet, learners read about the various things that cause weathering including plants and animals. They answer four critical thinking questions about weathering.

For this tropopause worksheet, students read about the temperature of the air in the tropopause or the layer of the atmosphere closest to the Earth. They answer four critical thinking questions about this layer and the energy changes...

In this magnification worksheet, students read about how lenses magnify images and how to determine the magnification of an image. Students divide ten by the focal length which is found to be the measurement from the center of the lens...

In this shock absorption worksheet, student read about bicycle design and how it effects shock absorption. They answer three critical thinking questions about bicycle design which make a bike ride smooth.

In this rechargeable batteries instructional activity, students read about how nickel-cadmium batteries work and answer four critical thinking questions about rechargeable batteries, how they work and their benefits.

In this electricity in the brain worksheet, high schoolers read about neurons, electrical impulses, brain activity and EEGs that measure electrical activity in the brain. They answer four critical thinking questions about brain activity.