Students analyze the relationship between wheel radius, linear velocity and angular velocity by using LEGO(TM) MINDSTORMS(TM) NXT robots. Given various robots with different wheel sizes and fixed motor speeds, they predict which has the fastest linear velocity. Then student teams collect and graph data to analyze the relationships between wheel size and linear velocity and find the angular velocity of the robot given its motor speed. Students explore other ways to increase linear velocity by changing motor speeds, and discuss and evaluate the optimal wheel size and desired linear velocities on vehicles.

In addition to overviewing Compton's (1892-1962 CE) studies in x-rays, this article includes information on Compton's published works, his education, and personal life.

Students will make predictions and conduct an experiment using marbles to figure out what types of things can cause a moving object to change direction. Included is a video of the lesson in action, pictures, discussion questions, and a recording sheet.

Students will be able to design and conduct their own simulation to determine the probability of an event.

Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Identify the shared characteristics of the natural sciences
Summarize the steps of the scientific method
Compare inductive reasoning with deductive reasoning
Describe the goals of basic science and applied science

If you are a crime scene investigation (CSI) fan, then you will love this site! You get to be the detective by examining the evidence, viewing the crime scene, dusting for fingerprints, interviewing the suspects, and solving the crime.

Students experiment with various ways to naturally dye materials using sources found in nature—roots, leaves, seeds, spices, etc.—as well as the method of extracting dyes. Then they analyze various materials using statistical methods and tackle an engineering design challenge—to find dyes that best suit the needs of a startup sustainable clothing company.

How can Earth move through space without our feeling its motion? This video segment adapted from NOVA answers this question by dramatizing one of Galileo's thought experiments. [2:42]

Students work as engineers and learn to conduct controlled experiments by changing one experimental variable at a time to study its effect on the experiment outcome. Specifically, they conduct experiments to determine the angular velocity for a gear train with varying gear ratios and lengths. Student groups assemble LEGO MINDSTORMS(TM) NXT robots with variously sized gears in a gear train and then design programs using the NXT software to cause the motor to rotate all the gears in the gear train. They use the LEGO data logging program and light sensors to set up experiments. They run the program with the motor and the light sensor at the same time and analyze the resulting plot in order to determine the angular velocity using the provided physics-based equations. Finally, students manipulate the gear train with different gears and different lengths in order to analyze all these factors and figure out which manipulation has a higher angular velocity. They use the equations for circumference of a circle and angular velocity; and convert units between radians and degrees.

Students learn about geometric relationships by solving real mini putt examples on paper and then using putters and golf balls to experiment with the teacher’s pre-made mini put hole(s) framed by 2 x 4s, comparing their calculated (theoretical) results to real-world results. To “solve the holes,” they find the reflections of angles and then solve for those angles. They do this for 1-, 2- and 3-banked hole-in-one shots. Next, students apply their newly learned skills to design, solve and build their own mini putt holes, also made of 2 x 4s and steel corners.

Create a cookbook to learn Standard Operating Procedures for food safety and environmental monitoring. Test for proteins, carbohydrates, and lipids and compare plant and animal protein. This unit features 5 lessons and 16 files. Lessons are aligned to NGSS.

Looking for an activity that combines robotics, coding, and engineering with a real life problem? This unit uses MakeBlock parts, Scratch programming, and modeling to help students design a solution to soil compaction. This unit features 2 lessons and 2 files. Lessons are aligned to NGSS.

This unit leads students through the process of setting up gel electrophoresis chambers, understanding the mechanics, and experimenting with various aspects of running gels. This unit features 3 lessons and 13 files. Lessons are aligned to NGSS.

Make biodiesel and create a scale model of an anaerobic digester, while investigating bioenergy and how it is produced. This unit features 5 lessons and 16 files. Lessons are aligned to NGSS.

Investigate various milk sources and their composition through core disciplines of Science, Math, Social Studies and Language Arts to discover the availability of milk types within multiple cultures that serve as a complete food source and help to ensure food security. This unit features 6 lessons and 10 files. Lessons are aligned to NGSS.

Did you know that there are many traits in soybeans that have an impact on sales and export of soybeans? One of the major ones is hilum color. What is hilum color? What is pubescence? Take a tour of the soybean to find out how these traits are inherited. This unit features 3 lessons and 5 files. Lessons are aligned to NGSS.