Are you an XX or an XY? Budding scientists learn about cellular fertilization and the determination of gender in a thorough online lesson. They follow their study with a set of interactive reflection questions.

Step into a scientist's shoes to go online and discover the Florida Springs Expedition, and participate in two activities focusing on how humans impact the environment. The first activity asks scholars to summarize the six...

High schoolers demonstrate the knowledge of proper scientific investigation and reporting skills. They decide how to make a positive difference in the world using these skills.

Students investigate the steps of the silk-making process through a reading of the story, "The Empress and the Silkworm" by Toy Hong. Sequencing cards are utilized to enhance the process and a silkworm's cocoon is unravelled.

Did you know that meat tenderizers contain DNA cutting enzimes? Did you know that you can isolate your own DNA? Or the DNA of fruit? Explore with your learners the DNA world with a series of experiments using readily available materials...

In this asteroid image worksheet, students observe a photograph taken by the NEAR imager and they determine the scale of the image following the given steps. They solve 4 problems using the scaled image and determine the dimensions, the...

Students examine how scientists are at odds on whether or not dinosaurs were warm or cold blooded.  For this dinosaurs lesson students divide into groups and research the evidence that supports each side. 

If a ski lift had rockets, imagine how fast it would be! Scholars let their imaginations take flight as they build models for such a ski lift. Rather than using a rocket, though, they'll use a much safer balloon as the power source.

Students explore the potential challenges of living in space.  In this investigative lesson students search the Internet to locate 16 nations that are working together to build the Independent Space Station, then they divide into...

Students discover the scientific method. In this science lesson plan, students explore the steps of the scientific method as they participate in a classroom activity.

Students investigate how rocket liftoff demonstrates Newton's Laws of Motion. They participate in a class discussion, and construct a rocket powered by the pressure generated from an antacid tablet reacting with water.

Students examine the historical development of meth use and the impact that it has on individual users and their communities. The problems in treating meth addiction are also explored in this instructional activity.

Background reading is available in the first two pages of this worksheet, along with reading comprehension questions and a laboratory activity in which students use mircroarray technology to identify genes used in cell differentiation....

Written to follow "Bacteria Lab I: Preparing Agar Plates and Culturing Bacteria," also found via the Lesson Planet site, this lab sheet instructs your microbiologists to test a bacteriocide for effectiveness. In the preceding lab, they...

The differences between tropical and temperate rainforests range from animals and flowers to climate and landscapes. Kindergarteners compare and contrast characteristics of their local forest to a tropical rainforest.

For this moon craters worksheet, students use a high resolution image of the lunar surface and calculate the image scale in meters per millimeter. They use the image scale to find the largest crater in the image, the smallest crater, the...

In this exploring cities from space worksheet, students use a satellite image from the QuickBird Satellite to determine the image scale. They use the image scale to calculate the length of the Bellagio Hotel in Las Vegas, the length of a...

In this Washington D.C. from space worksheet, students use a picture generated by the International Space Station and they find the scale of the image. They determine the actual size of features in the image, they find the distances...

Tenth graders examine the process of mitosis on a laser disc. They examine mitosis in an onion utilizing the microscope.

In this water on Mars learning exercise, students use a diagram to answer four questions about the structures in the image. They find the dimensions of the image, the width of the streams half-way down their flow channels, the smallest...

In this lunar crater worksheet, students use an image taken by the Lunar Orbiter spacecraft to find the scale of the image and determine the diameter of the lunar crater Tycho. They also find the size of the smallest and largest features...

In this mars and scaling activity, students use the given image to determine the dimensions of the image and the size of specific details on the image. They calculate the image scale in meters in order to determine specific...

Fifth graders explore drag, thrust, lift and weight.  For this airplane lesson, 5th graders define the forces that effect airplanes and design a model airplane.  Students  compare their models for the...

In this age of rocks worksheet, students answer five matching questions about terms related to the decay of atoms. They use a strip of paper to simulate half life of atoms and determine the total amount of time it took to deplete the paper.