CK-12 Foundation
Cellular Respiration: Can Photosynthesis Be Reversed?
Cellular respiration and photosynthesis relate closely, but many don't realize how. Scholars drag and drop the reactants and products to the chemical reactions for both processes. Then they answer three multiple-choice questions.
Curated OER
TAKS Quiz-Single Step Multiplication Problems
In this TAKS math quiz worksheet, students take an online quiz focused on single step multiplication problems. Quiz may be graded online by clicking a link.
Curated OER
How are People Changing the Climate: Basics
In this climate change worksheet, students answer a series of questions about climate change. Students have multiple choice options for six online quiz questions
Curated OER
ESL Reading Comprehension: "Brown Widow" Spider
For this ESL reading comprehension worksheet, learners read an article about the discovery of the "brown widow" spider and complete a set of 15 comprehension questions.
Concord Consortium
Concord Consortium: Stem Resources: The Virtual Field
A virtual lab that explores how offspring inherit different traits from their parents. Investigate these traits both in animals and plants. Understand that variations in offspring can lead to traits that allow survival. Lab includes...