Curated OER
Estimating Sums and Differences
Work on rounding, estimating, adding, and subtracting with a helpful math worksheet! Fifth graders study different sets of addition and subtraction problems, and after rounding each number to the leading digit, they estimate what the sum...
Noyce Foundation
Time to Get Clean
It's assessment time! Determine your young mathematicians' understanding of elapsed time with this brief, five-question quiz.
Curated OER
Complex Numbers
In this complex numbers worksheet, 9th graders solve 10 different problems that include addition and subtraction of these numbers. First, they add or subtract the coefficients of similar terms algebraically. Then, students remove the...
Curated OER
Subtracting from Ten: Using Math with Music
Students explore basic math functions by singing with their classmates. In this addition and subtraction lesson, students sing the song "5 Green and Speckled Frogs"and complete a list of subtraction problems. Students complete a...
Curated OER
Regression Analysis
In this regression analysis activity, 9th graders solve 10 different word problems related to regression analysis. First, they use the information given to find a suitable function to model the data. Then, students use the model to...
Discovery Education
Sonar & Echolocation
A well-designed, comprehensive, and attractive slide show supports direct instruction on how sonar and echolocation work. Contained within the slides are links to interactive websites and instructions for using apps on a mobile device to...
Curated OER
Chemistry Worksheet-Equilibrium
For this equilibrium worksheet, students solve twenty problems including determining the effects of various stresses on chemical reactions, calculating equilibrium constants, determining heat of reactions and writing expression for...
Curated OER
Educational Subjects
In this interactive vocabulary worksheet, students read the description of educational subjects and select the subject which the sentence is describing. There are 10 questions to complete.
Curated OER
Chemical Reactions
In this chemical reactions learning exercise, students determine what happens when specific stresses are applied to a reaction. Students calculate the equilibrium constant with respect to pressure. This learning exercise has 20 problems...