Texas Education Agency
Texas Gateway: 3.2 Vector Addition and Subtraction: Graphical Methods
By the end of this section, you will be able to understand the rules of vector addition, subtraction, and multiplication and to apply graphical methods of vector addition and subtraction to determine the displacement of moving objects.
E-learning for Kids
E Learning for Kids: Math: Llama Farm: Addition and Subtraction: Counting Forwards and Backwards
On this interactive site students learn to write 2-digit numbers, count forward and backward by tens and show subtraction facts.
Windstream
Ojk's Precalculus Study Page: Sum and Difference Formulas for Sine and Cosine
An introduction to trigonometric identities, beginning with the sum and difference formulas. Some of the formulas are proven, some are left to the reader. Includes several examples and pictures.
Math Slice
Basic Math: Subtraction
This resource covers basic addition where students can choose a range of numbers including negatives or even decimals. After selecting parameters students are timed completing ten problems with instant feedback and an opportunity to...
Math Drills
Math Drills: Mixed Operations Math Worksheets
Download these worksheets to sharpen your operations skills. Sheets focus on addition, subtraction, multiplication, division, mixed operations, input/output tables, the order of operations, and operations in other base number systems.
Better Lesson
Better Lesson: Put Together or Take Away?
First graders learn the basics of 1.OA.1 by mixing addition and subtraction word problems from day 1. The focus question is: Put together or take away?
Illustrative Mathematics
Illustrative Mathematics: 1.oa Valid Equalities?
This lesson plans allows students to explore the meaning of the equal sign in addition and subtraction problems.
Illustrative Mathematics
Illustrative Mathematics: Boys and Girls, Variation 1
This word problem focuses on the Put Together/Take Apart contexts for addition and subtraction. Students may use objects, pictures, or equations to represent their solutions. Examples and explanations are provided.
Common Core Sheets
Common Core Sheets: The Number System 7.ns.1c Worksheets
Print or create worksheets or flashcards to assess students' understanding of converting a subtraction problem to an addition problem and finding equivalent expressions.
Homeschool Math
Homeschool Math: Finding the (Least) Common Denominator
Students learn about finding a common denominator in fraction addition and subtraction.
Simon Fraser University
Chem1 Virtual Textbook: The Measure of Matter
This site examines the specific difference between mass and weight in addition to length, temperature, and time.
Texas Education Agency
Texas Gateway: Ap Physics: 1.3 Accuracy, Precision, and Significant Figures
By the end of this section, you will be able to do the following: Determine the appropriate number of significant figures in both addition and subtraction, as well as multiplication and division calculations and Calculate the percent...
Texas Education Agency
Texas Gateway: Kinematics in Two Dimensions: Section Summary
This is a summary of each of the sections in Chapter 3: Kinematics in Two Dimensions of the AP Physics online text.
ReadWriteThink
Read Write Think: Questioning a Comprehension Strategy for Small Group Reading
Contains plans for three lessons about asking the right questions while reading. After the teacher explains the difference between factual and inferential questions, students practice using them in small-group guided reading. In addition...
ReadWriteThink
Read Write Think: To, Too, or Two Developing an Understanding of Homophones
Contains plans for a lesson that teaches students the difference among common homophones using many modalities. In addition to objectives and standards, this instructional plan contains links to sites used in the lessons as well as...
Study Pad
Splash Learn: Decimal Arithmetic
[Free Registration/Login Required] This game provides practice in decimal arithmetic including addition, subtraction, multiplication, and division of decimals.
Hooda Math
Hooda Math: Balance Scales
Solve simple linear equations using a balance beam. Replicate the given equation by moving the blocks of X and 1 to the sides of the balance scale. Then use addition, subtraction, multiplication, and division to each side to solve for x.
Elias Saab
Math Drills: Whole Number Operations Quiz
An interactive quiz which provides students with two whole numbers and a randomly selected operation sign between them. Students input their solution and have the program evaluate it. Hints are available if the student needs them, and...
Illustrative Mathematics
Illustrative Mathematics: 6.ns Jayden's Snacks
This is a simple task that checks students' understanding of decimal operations by having them do computations with money. Aligns with 6.NS.B.3.
Common Core Sheets
Common Core Sheets: Number and Operations Fractions 5.nf.2 Worksheets
Worksheets provide practice with solving adding and subtracting fractions with answer keys are provided. You can even create your own learning exercise or flash cards.
Calculator Soup
Calculator Soup: Lcd Calculator Least Common Denominator
Use this Least Common Denominator Calculator to find the lowest common denominator (LCD) of fractions, integers and mixed numbers. Finding the LCD is important because fractions need to have the same denominator when you are doing...
Illustrative Mathematics
Illustrative Mathematics: 1.oa Kiri's Mathematics Match Game
In this lesson plan, 1st graders play a matching game to explore unknown numbers.
Calculator Soup
Calculator Soup: Adding Fractions Calculator
Add and subtract proper and improper fractions with this calculator and see the work involved in the solution.
Ducksters
Ducksters: Kid's Games: Fast Math in Outer Space Game
Test your math skills and speed with this fun space battle game. You will have to do more than just shoot straight, you will have to add, subtract, divide, and multiply quickly to win this battle.
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