Cold Spring Harbor Laboratory
DNA Words Are Three Letters Long
DNA writes 64 different words but only codes for 20 different amino acids. Budding scientists learn about where each of these numbers come from and why they aren't equal with an online interactive. The resource explains the research, the...
Illustrative Mathematics
Explaining Fraction Equivalence with Picture
Visual models are a great tool for demonstrating the concept of equivalent fractions. Given two pictures, young mathematicians first identify each fraction and then write an explanation for why they are equivalent. Use as a guided...
Curated OER
Basic Addition
Introduce addition to your class with this handy and well-thought-out presentation. Addition is defined and then shown in four different examples. Images, a story problem, numeric, and number line variations of the same problem are all...
Mathed Up!
Estimation
Reinforce estimation and the four operations—addition, subtraction, multiplication, and division—with eight page, 15 problem independent practice exercise.
Curated OER
Symbols in Algebra
Learners name and sketch numerical expressions. For this order of operation lesson, students add, subtract, multiply and divide using the correct order of operation. They perform four specific calculations for their motivation lesson.
Curated OER
Math Word Search: Calculate Words
In this math operations word search, students search for 15 math related words hidden within the puzzle. More words may be found as well.
Virginia Department of Education
A Mystery to Solve
Investigate field properties of real numbers. Scholars use a table for a given operation to determine the identity element. They use the same table to find a missing value in an equation.
Curated OER
Array Picture Cards
Arrays are a visual way to practice multiplication and division. Using one of these twelve array picture cards, learners write a multiplication word problem describing what they see. After also recording a multiplication number sentence,...
Curated OER
Measurement and Time Problems
Take a deeper look at the steps used to solve measurement and time problems. One word problem involving measurement and 1 word problem involving time is taken apart and described in terms of the strategies used to solve each. A...
Curated OER
Number and Operations- Raul's Apples: Word Problem
Students discover how they can use manipulatives to solve word problems. For this problem solving lesson, students read Raul's Apples Problem and then complete a worksheet, using beans or counters to solve the problem. Students discuss...
Curated OER
Repeated addition, Multiplication and Division
Not only will your class practice solving addition, multiplication, and division word problems, but they also have the opportunity to try to put the mathematical expression into words. These skills will help your students with future...
Curated OER
Fraction Puzzle Problems
Fifth graders design a fraction word problem PowerPoint presentation. In small groups they complete a storyboard graphic organizer for their word problem, evaluate another group's word problem, and create a PowerPoint presentation of...
Curated OER
Choose The Operation
In this choose the operation worksheet, students write when they would use given operations, list words or phrases that help them know when to choose an operation, then solve 2 word problems.
Curated OER
Online video games plus curriculum-based math equals an engaging educational tool.
Seventh graders use online math games to practice understanding the skill of estimation and order of operations. In this lesson, 7th graders use the internet to play online games to strengthen their understanding of these skills.
Curated OER
Using Inverse Operations to Solve Equations
Fifth graders discover how to use inverse operations to solve equations. In this inverse operations lesson, 5th graders explore visual examples. Students also practice solving problems that their instructors model.
Curated OER
Christmas Order of Operations
In this order of operations worksheet, students solve a set of 20 problems. A website reference for additional resources and answer key are provided.
Curated OER
Exercise Require Mathematical Operation 3
In this math skills activity, students solve 1 multiple choice problem that requires them to read a story problem and select the appropriate number sentence that represents the problem. Students may view the correct answers.
Curated OER
Exercise Require Mathematical Operation 10
In this math skills worksheet, students solve 1 multiple choice problem that requires them to read a story problem and select the appropriate number sentence that represents the problem. Students may view the correct answers.
Curated OER
Exercise Require Mathematical Operation 14
In this math skills worksheet, learners solve 1 multiple choice problem that requires them to read a story problem and select the appropriate number sentence that represents the problem. Students may view the correct answers.
Curated OER
Order of operations
In this order of operations worksheet, learners complete math problem involving all four operations and including parenthesis. Students complete 20 problems.
Curated OER
Order of Operations- Math Worksheet
In this order of operations activity, students solve 20 order of operations math problems. There is a printable version of this activity available that does not contain advertisements.
Curated OER
Order of Operations
In this order of operations practice worksheet, students use their problems solving skills to solve 20 multi-step problems according to the order of operations.
Curated OER
Order of Operations 6
In this order of operations practice worksheet, students use their problems solving skills to solve 20 multi-step problems according to the order of operations.
Curated OER
Order of Operations
Seventh graders explore the order of operations. They compare how the values of equations change when the order of operations is not followed. They discuss the order of operations. Independently, 7th graders solve equations. Students...