In this fractions in chemistry learning exercise, students solve 2 problems where they state all the answers as simple fractions or integers. They determine ratios of molecules in gasoline and they find ratio of molecules in the creation...

In this Algebra I/Algebra II worksheet, learners solve problems involving direct variation.  The two page worksheet contains a combination of twelve multiple choice and free response questions.  Answers are included. 

In this chemistry worksheet, students find the outcomes necessary for the oxidation reduction reactions. The sheet includes background information.