Cell Organelles

The National Chemistry Olympiad exams are comprehensive tests covering an entire  year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...

What do a bird, an egg, a rabbit, and a toad all have in common? This fun-filled resource explains the similarities and differences between cells and how all cells are similar, yet all are different. Learners begin by depicting a...

Fuel cells are being called the "energy source" of the future. Allow your high school chemistry class to construct a miscroscale fuel cell, complete with all components to generate energy. This engaging activity will allow them to apply...

Take your time with this lesson. Junior engineers read about different types of clocks and then work together to build a pendulum time-keeper. There are no hints as to how they might go about accomplishing this complex task, so you may...

Given four suggested concepts, emerging electrical engineers research, design, and constuct a working device that willrespond to changes in the intesnisty or the direction of sunlight. This is a challenge for learners to rise to, as the...

Viewers learn about prokaryotic and eukaryotic cells in the third installment of a five-part video series. The video covers the similarities and differences between these two types of cells, including a brief etymological aside on how...

In this electrical circuit worksheet, learners answer a series of 18 open-ended questions about analog to digital converter circuits. They analyze schematics in order to answer the questions. Students design and build an analog to...

In this electrical circuit worksheet, students answer a series of 13 open-ended questions about digital-to-analog converter circuits. They analyze schematics in order to answer the questions. This worksheet is printable and the answers...

Grandma said to gargle with salt water for a sore throat. Was she right? In the last part of the seven-part unit, lab groups design an experiment to test a cells reaction to salt solutions. The pupils conduct their experiment to answer...

After studying the structure and functions of living cells using textbooks, internet or encyclopedias, learners prepare a PowerPoint presentation on cell structure and present it to the class.