For years, scientists believed tRNA was junk left over from larger RNA. Three scientists used different approaches to prove tRNA actually exists as the connection between DNA and protein. Learn about their experiments, their lives, and...

When DNA research first began, it required almost an entire day to extract the molecules from a cell nucleus. Now it requires less than an hour. Scholars learn about the early theories of DNA with an online interactive, videos,...

A famous fossil of fighting dinosaurs holds as many questions as answers. Scholars first analyze the fossil itself by virtually highlighting the specific bones of the dinosaurs and read about their function and importance. They then test...

In this online interactive history quiz worksheet, students respond to 45 multiple choice questions about the Scientific Revolution. Students may submit their answers to be scored.

Behold, the electron is discovered! Take young scientists on a journey back through time to examine JJ Thompson's famous experiment using a Crooke's tube. Pupils manipulate the charge on the apparatus' horizontal plates, observe cathode...

In this online interactive history quiz worksheet, students respond to 10 short answer and essay questions about the life and accomplishments of Isaac Newton.

Rules are not meant to be broken in genetics. Scholars learn to build Punnett squares to track the inheritance of dominant and recessive traits in an interactive animation activity. Online questions help individuals reflect on their...

In this grammar online interactive worksheet, students choose the appropriate mixed preposition from the multiple choice answers shown from the 10 drop down boxes that completes each sentence correctly. Students check their answers...

In this online interactive history worksheet, students respond to 9 short answer and essay questions about the achievements of Niels Bohr. Students may check some of their answers on the interactive worksheet.

In this Indiana Jones activity, students answer multiple choice questions about details of the movie Indiana Jones. Students complete 12 questions total.

In this language review worksheet, students read about James Cook and complete a fill in the blanks inside the paragraphs about him, read about the western alphabet and complete multiple choice questions, and more. Students complete 5...

In this relative clause worksheet, students fill in the blanks to sentences with the correct relative clause. Students complete 17 multiple choice questions.

A fun game in which players use clues to identify important figures in history (either U.S. presidents or famous scientists and mathematicians).

Use this quiz-style game to identify historical figures in the field of medicine.

Choose from a word bank to complete ten sentences about famous scientists. Hints are available if needed, and a percentage score is displayed once answers are submitted.