CK-12 Foundation
Counting Techniques: Permutations and Combinations
Comparing and contrasting is an important skill, even in mathematics. A drag-and-drop interactive has users classify situations as suitable for permutations or combinations. A set of challenge questions tests whether they know the...
Curated OER
Logic Quiz
In this algebra worksheet, students review grouping like terms using a Venn Diagram. They compare and contrast between like terms and unlike terms. There are 6 problems with an answer key.
Curated OER
Find the Odd One Out
In this same or different worksheet, students look at four objects and determine which one does not belong. They click on the object that is different than the others.
Curated OER
Clean Coal Technology
In this clean coal worksheet, students click on the links to learn more about clean coal technology and answer short answer questions about it. Students complete 12 questions total.