CK-12 Foundation
Ck 12: Elem Math: Sums of Whole Numbers to 1000 (Grade 3)
[Free Registration/Login may be required to access all resource tools.] This site offers the video "Addition: 3 Digits." and a practice quiz in which students solve problems using addition to find the sum or summand of numbers up to 1000.
CK-12 Foundation
Ck 12: Addition and Subtraction of Liters Applications (Grade 3)
[Free Registration/Login may be required to access all resource tools.] This learning module features three videos and a set of practice questions in which students solve word problems requiring either one-step or two-step addition...
Discovery Education
Discovery Education: Web Math: Add and Subtract Polynomials
Perform and see examples of adding and subtracting polynomials on the WebMath "Solver."
Read Works
Read Works: An Engine Without Brakes
[Free Registration/Login Required] A literary text about a boy named Alex who learns strategies to help him deal with his hyperactivity. A question sheet is available to help students build skills in reading comprehension.
Read Works
Read Works: The Scoop on Adhd
[Free Registration/Login Required] An informational text about ADHD with information about what it is and how to deal with it. Advice and insight from students with ADHD gives a unique perspective. A question sheet is available to help...
Discovery Education
Discovery Education: Web Math: General Math
An extraordinary site that will help you with your math homework. Presented in a format that is both easy to understand and educational. Navigate through numerous instant-answer, self-help math solvers to help you figure out your math...
Discovery Education
Discovery Education: Web Math: See How Two Numbers Add Together
WebMath offers a good addition practice site. Students can use this site to check their homework assignment. An explanation is given regarding how each answer was arrived at.
WebMD
Web Md: Attention Deficit Hyperactivity Disorder
This site from WebMD provides a great topic overview of attention deficit hyperactivity disorder (ADHD). Also provides links to causes, symptoms, risks, medications, surgery information, home treatment and prevention.
![K 5 Math Teaching Resources: Rectangles [Pdf] Unit Plan](https://static.lp.lexp.cloud/images/attachment_defaults/resource/large/FPO-knovation.png "K 5 Math Teaching Resources: Rectangles [Pdf] Unit Plan")
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Rectangles [Pdf]
K-5 Math Teaching Resources: Rectangles learning activity that applies skills to create rectangles.
Lesson Tutor
Lesson Tutor: Add and Adhd Home Page
Common sense tips and new techniques are included here in a number of articles related to ADD and ADHD.
Purple Math
Purplemath: Adding and Subtracting Matrices
Demonstrates how to add and subtract matrices, explains why the addition or subtraction sometimes can't be done, and gives an example of how matrix addition is used in homework problems.
Cool Math
Coolmath: Addition of Signed Numbers With the Same Sign
This prealgebra lesson explains how to add signed numbers (integers) when the signs are the same.
Khan Academy
Khan Academy: Add Within 100
Practice adding two-digit numbers. All numbers in these problems are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add and Subtract on a Number Line
Practice adding and subtracting numbers like 554 and 237 using a number line. All numbers are less than 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Adding 53+17 by Making a Group of 10
Sal adds 53+17 by breaking apart the numbers and making a group of 10. [3:35]
Other
Chiropractic Research Results for Different Conditions
Did you know that through the manipulation of the spine people receive some relief from serious conditions such as Autism, Cancer, and Ulcers? This site provides of list of such ailments and connects the user to articles relating the...
Illustrative Mathematics
Illustrative Mathematics: 4.nf Making 22 Seventeenths in Different Ways
This task is a straightforward task related to adding fractions with the same denominator. The main purpose is to emphasize that there are many ways to decompose a fraction as a sum of fractions, similar to decompositions of whole...
Illustrative Mathematics
Illustrative Mathematics: 4.nf Comparing Sums of Unit Fractions
The purpose of this task is to help develop students' understanding of addition of fractions; it is intended as an instructional task. Aligns with 4.NF.B.3.a.
Khan Academy
Khan Academy: One Step Addition & Subtraction Equations: Fractions & Decimals
Practice solving equations in one step by adding or subtracting a number from both sides. These problems involve decimals and fractions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Khan Academy
Khan Academy: Add Polynomials (Intro)
Students practice adding polynomials with these exercises. They receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Other
Optometrists Network: Attention Deficit Disorder
Use this comprehensive index linking to various articles and online resources about ADD to learn more about the disorder, how it is treated, and current related news and information.
Lesson Tutor
Lesson Tutor: Add and Adhd Home Page
Common sense tips and new techniques are included here in a number of articles related to ADD and ADHD.
Better Lesson
Better Lesson: Go Fishing for a Ten
Second graders use a familiar card game to help them build their math fact fluency for facts where the sum is 10.
Better Lesson
Better Lesson: Go Fishing for Doubles
Second graders play a favorite card game which practices the quick and accurate recall of double facts.