Curated OER
Native American Pebble and Pot Game
Students participate in a game using 12 manipulatives. In this addition and subtraction lesson students play a game originated by the Native Americans and look at a number of items and calculate how many are hidden. Items looked at and...
Curated OER
Math Cross, Puzzle #26
Here is a measurement, money and time activity which invites learners to solve twenty-eight math problems utilizing addition, subtraction and multiplication strategies to complete a math crossword puzzle.
Curated OER
Math Cross--Puzzle #10
In this money worksheet, students fill in a crossword puzzle as they solve twenty-eight math problems dealing with different forms of money intertwined into addition, subtraction and multiplication problems.
Curated OER
Looking Through the Algebraic Lens
Students work with rectangles to find generalizations for adding and subtracting odd and even numbers in part one of the lesson. In part two, students use geoboards to construct polygons, look for patterns, and find a general rule.
Curated OER
Book Title: You Can’t Buy a Dinosaur with a Dime
Students explore the concepts of multiple digit addition and subtraction. In this addition and subtraction lesson, students read the book You Can’t Buy a Dinosaur with a Dime and then discuss methods for solving a particular math problem...
Curated OER
The School Store
Students choose between the operations of addition or subtraction to solve a real life problem. In this addition and subtraction instructional activity, students make a chart of items sold in the school store. Students then work in teams...
Curated OER
Carry and Borrow
Second graders complete basic math computations. In this addition and subtraction lesson, 2nd graders learn how to carry and borrow numbers when adding and subtracting. Students learn a carrying song to help them remember. Students...
Curated OER
Transportation Math
Students use mathematical operations to examine truck drivers and the math they use everyday. In this transportation math lesson, students read word problems that relate to transportation and the math needed to solve the word problems....
Curated OER
Goldfish Subtraction
Learners manipulate Goldfish crackers to explore subtraction and number sentences.
Curated OER
Fact Families
There is something to be said for fact families. Classmates read problems and write related fact families and number sentences. There are 6 wonderful problems to solve.
Curated OER
The Math Lesson 25
In this math skills worksheet, students enhance their addition and subtraction skills by solving the 20 pages of double and triple digit equations.
Curated OER
Lesson Plans That Meet The Needs of All Students
Differentiated lesson plans are an excellent tool for meeting students' needs in the mixed ability classroom.
Curated OER
Addition and Subtraction
Young scholars develop their own strategies to solve basic addition and subtraction facts. In this addition and subtraction lesson plan, students use strategies they already know and new ones to solve problems.
Curated OER
Addition and Subtraction Facts to 20
Young scholars act out computation problems. In this addition and subtraction lesson plan, students act out an addition story and write an addition sentence for it. Young scholars continue this activity and answer the provided questions.
Curated OER
Integer Subtraction
Students examine why a negative number subtracted from another number changes the operation to addition.
Math in English
Number Patterns
Build the pattern recognition skills of young mathematicians with this simple skills practice worksheet. Given nine different sequences of two-digit numbers, children must identify the pattern and determine the next three numbers in...
EngageNY
Trigonometric Identity Proofs
Proving a trig identity might just be easier than proving your own identity at the airport. Learners first investigate a table of values to determine and prove the addition formulas for sine and cosine. They then use this result to...
EngageNY
Getting a Handle on New Transformations 1
In the first of a two-day lesson plan on transformations with matrix notation the class transforms the unit square using general transformations, then calculates the area of the transformed image. They discover it is the same as finding...
EngageNY
Mastering Factoring
Math class is full of drama—there are so many problems to work out! Pupils work out factoring problems. They use quadratic methods of factoring higher degree polynomials, in addition to factoring the sum and difference of two cubes.
EngageNY
Four Interesting Transformations of Functions (Part 2)
What happens to a function whose graph is translated horizontally? Groups find out as they investigate the effects of addition and subtraction within a function. This nineteenth lesson in a 26-part series focuses on horizontal...
Teach Engineering
Bone Density Math and Logarithm Introduction
What do logarithms have to do with bone density? Scholars learn that the equation for bone density includes logarithms. The majority of the third lesson of seven is devoted to logarithms and their properties.
EngageNY
Sums and Differences of Decimals
Sometimes dealing with decimals is so much easier than dealing with fractions. The ninth lesson in a 21-part module has the class consider situations when it might be easier to add or subtract fractions by first converting to decimals....
EngageNY
The Relationship of Multiplication and Division
Take any number, multiply it by five, and then divide by five. Did you end up with the original number? In the same vein as the previous instructional activity, pupils discover the relationship between multiplication and division. They...
CK-12 Foundation
Properties of Real Number Addition: The Secret of Subtraction
Learners sometimes struggle to understand the concept of adding and subtracting integers. Help them see the why behind their answers using the interactive number line. The values change as individuals adjust the number line for each new...