Worksheet
Curated OER

Adding and Subtracting Fractions

For Students 4th - 6th
In this adding and subtracting fractions worksheet, students are guided through the process of adding and subtracting fractions and finding the least common denominator for fractions with different denominators. They practice adding and...
Worksheet
Curated OER

Decimals and Fractions

For Students 5th - 7th
In this decimals and fractions activity, students read about decimals and fractions and how to change one to the other. They solve two multi-part problems practicing converting decimals to fractions and fractions to decimals.
Lesson Plan
Curated OER

It's Not Easy Being Green

For Teachers 7th - 12th
Students complete a unit that focuses on their school's waste production. They conduct a litter survey, collect the waste produced in their classroom for a week and generate a waste-audit, and identify how their school can minimize...
Worksheet
Curated OER

Formula Mass

For Students 9th - 12th
In this formula mass activity, students read about molecular substances and their formula masses. They find the formula masses for six compounds using the atomic masses of its elements.
Lesson Plan
Curated OER

Trash Pizza

For Teachers K - 6th
Students work together to identify items sent to landfills. They summarize percentages of the different items found in landfills. They create a pizza pie graph of all of the components found in landfills.