In this electrical worksheet, students answer a series of 6 open-ended questions about pulse-width signal generators. This worksheet is printable and the answers are revealed online.

DNA writes 64 different words but only codes for 20 different amino acids. Budding scientists learn about where each of these numbers come from and why they aren't equal with an online interactive. The resource explains the research, the...

In this electronics instructional activity, students interpret schematic diagrams and analyze circuit components to answer 9 short answer and problem solving questions.

Students explore human senses. In this applied Science lesson, students utilize their senses to distinguish various objects. Students explain their descriptions.

A well-designed, comprehensive, and attractive slide show supports direct instruction on how sonar and echolocation work. Contained within the slides are links to interactive websites and instructions for using apps on a mobile device to...

The last unit in the series allows kindergarteners to see the dangers and hazards associated with each of the natural disasters learned so far in the series—earthquakes and volcanoes. They listen to sounds associated with the...

Students identify ways companion animals are used to assist humans. Students identify zoonoses and list several types of. Students identify several aspects of responsible companion animal ownership. Students design, distribute, and tally...

High schoolers explore the principles of flight. In this flight lesson, students construct a model plane and investigate the forces acting on the flier. They will measure the thrust and calculate the stored energy.

Students are taught that they can gather information about objects using the five senses of vision, touch, smell, taste, and hearing. They are told that some sensing, like sight, is done remotely. Students observe how a camera can...

Third graders review the placement and role of the sun in the solar system. Using beads, they create a necklace which they can use to identify the amount of sunlight is being illuminated. In groups, they record observations on the...

Students use downloadable pages to sort the stages of the frog life cycle into the correct, labelled sequence.

Students are introduced to the concept of life cycles. They discover how many species go through their lives in a series of stages from birth or hatching to adulthood. Such stages make up the life cycle. Students investigate the life...

Student's measure sporadic meteor activity.  In this physics and astronomy lesson, 11th graders construct a dipole antennae, and build, test and wire a full wave diode rectifier between the dipole antenna and the laptop.