Henrico County Public Schools
Models for Teaching Addition and Subtraction of Integers
Positive and negative numbers are everywhere in the world around us. Whether it's charged particles in atoms, a hot air balloon rising and falling in the sky, or a series of bills and checks being delivered in the mail, this resource...
Curated OER
Kids Can Make a Difference
What is a philanthropist? We can all be philanthropists! After assessing the needs of the school and listening to literature about how they can help others, primary learners develop a class project and maintain a journal of their...
Curated OER
Integers - Objects Model
Sixth and seventh graders solve 19 various types of problems related to integers as objects models. They write an integer that corresponds to each letter on a number line and then, arrange the integers from least to greatest. Pupils also...
Curated OER
Beginning Subtraction #2
In this beginning subtraction worksheet, students observe models of subtraction problems to assist them in finding the difference. Afterward, they fill in the blank to subtraction problems. There are 21 subtraction equations on the page....
EngageNY
Writing Addition and Subtraction Expressions
Symbols make everything so much more concise. Young mathematicians learn to write addition and subtraction expressions — including those involving variables — from verbal phrases. Bar models help them understand the concept.
EngageNY
Interpreting Division of a Whole Number by a Fraction—Visual Models
Connect division with multiplication through the use of models. Groups solve problems involving the division of a whole number by a fraction using models. The groups share their methods along with the corresponding division and...
EngageNY
The Relationship of Division and Subtraction
See how division and subtraction go hand-in-hand. The fourth installment of a 36-part module has scholars investigate the relationship between subtraction and division. They learn using tape diagrams to see that they can use repeated...
Facing History and Ourselves
Responding to Difference in Democracy
Disagreements happen in a diverse democracy. It's what people do about these differences in a diverse society that the resource models. After listening to an eight-minute podcast about a woman who collaborated with people who have very...
Virginia Department of Education
Modeling Division of Fractions
Provide a meaningful context for learning about the division of fractions with this upper-elementary math lesson. Presented with a simple, real-world problem, young mathematicians work in small groups to develop visual models that help...
EngageNY
Writing an Argument Essay: Introducing the Writing Prompt and Model Essay
Scholars take a look at the difference between explanatory and argumentative essays by completing graphic organizers. They then determine how this difference applies to the Pygmalion writing prompt. Learners keep track of their writing...
Curated OER
Subtraction with Base 10 Models
Learning how to regroup can be a difficult concept to learn, as well as teach. This PowerPoint does an excellent job at visualizing the process with step-by-step guidelines and base ten animations. There are multiple examples for...
Math Learning Center
Grade 1 Supplement Set A3 - Number and Operations: Addition and Subtraction on the Number Line
Hop your way through a mathematical equation with your first grade class as they learn the idea of moving up and down the number line. Adding and subtracting like little frogs is an engaging and clever way to teach/reinforce this concept.
Curated OER
Linear and Quadratic Model, Data Modeling
Students model quadratic and linear equations. In this algebra instructional activity, students solve word problems using equations. They create scatter plots and make predictions using correlations.
Virginia Department of Education
Integers: Addition and Subtraction
Young mathematicians construct their own understanding of integers with an inquiry-based math lesson. Using colored chips to represent positive and negative numbers, children model a series of addition and subtraction problems as they...
Mathematics Vision Project
Module 7: Modeling with Functions
The sky's the limit of what you create when combining functions! The module begins with a review of transformations of parent functions and then moves to combining different function types using addition, subtraction, and multiplication....
EngageNY
Writing and Evaluating Expressions—Addition and Subtraction
Let Y represent Yes to using an excellent resource. Pupils first learn to define variables using a complete description in the 19th part in a series of 36. They write expressions involving addition and subtraction in real-world contexts...
Teacher's Guide
Two Digit Subtraction with Regrouping
Second and third graders are prompted to find the differences of two-digit equations with regrouping. Encourage your class to show their work using models or drawings.
Mathematics Assessment Project
Generalizing Patterns: The Difference of Two Squares
After completing an assessment task where they express numbers as the difference of squares (i.e., 9 = 5^2 – 4^2), class members note any patterns that they see in the problems.
Curated OER
Model Subtraction
In this subtraction practice activity, learners sharpen their problem solving skills as they solve 6 story problems using the provided table.
Curated OER
Model Subtraction from Numbers to 100
In this subtraction worksheet, students solve the subtraction word problems that range in number to 100. Students solve six subtraction word problems.
Curated OER
Model Subtraction from 2,000
In this subtraction worksheet, students solve 6 story problems. Students subtract larger numbers with regrouping. There are also problems with regrouping across zeros.
Curated OER
Model Subtraction
In this early childhood math practice worksheet, students show the stories with counters and record the numbers in order to solve 6 subtraction story problems.
Common Core, Inc.
Multi-Digit Whole Number Subtraction
A thorough exploration into subtracting multi-digit numbers, this series of lessons is an excellent way to guide learners of any skill level. With a step-by-step lesson plan and straightforward assessment tools, kids are sure to...
Virginia Department of Education
The Modern Model of Atomic Structure
The difference between atomic mass and atomic number can be confusing for some young chemists. Help your class better understand the concepts by allowing them to sketch an atom on paper and then discuss their experience. Upon completion...