Khan Academy
Khan Academy: Division by 2 Digits
Divide 3-digit and 4-digit numbers by a 2-digit number without remainders. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Annenberg Foundation
Annenberg Learner: Patterns in Mathematics: Mystery Operations
This interactive activity allows you to change an equation's numbers in an attempt to figure out what operations are being used to control the answers.
Other
Science.ca: Coxeter Tile Rhombus Game
For this activity created by mathematician Donald Coxeter, students manipulate rhomboids to make different 3-D cubes and other shapes.
Math Playground
Math Playground: Make a Number
Make the target number using four cards and four operations in this interactive game.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Special Right Triangles
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of special right triangles.
Analyze Math
Analyze Math: Medians of Triangle
The properties of the medians of a triangle are explored using an interactive geometry applet.
Edmonton Public Schools (Canada)
Edmonton Public Schools: Long Division
This resource consists of rules and examples of long division with and without decimal divisors and dividends.
Oswego City School District
Regents Exam Prep Center: Congruence of Triangles
Congruent means, "same size, same shape." Find out more about this concept at this test prep site with real world examples and pictures. Hands-on classroom activity and lots of practice. Knowledge of basic algebra and geometry concepts...
National Council of Teachers of Mathematics
The Math Forum: What Is a Tessellation?
The Math Forum defines and illustrates geometric tessellation.
National Council of Teachers of Mathematics
Nctm: Figure This: Number Tricks
Can you break the magic number code? Test your algebra aptitude in this challenge that explores number generalizations, symbols, and equations. Discover how algebraic procedures are used in everyday situations in this one page activity...
Arcademics
Arcademics: Integer Warp
Idenitfy the correct answer based upon the given integer multiplication problem.
Cool Math
Coolmath: Coolmath4kids: Tessellations
Tessellations are explained and described at this website. Three basic rules are given for creating tessellations.
Other
Long Division Worksheets
Give these worksheets to students to practice division using the standard algorithm.
Khan Academy
Khan Academy: Multiplying Decimals 3 (Standard Algorithm)
In this exercise, students practice multiplying decimals 3. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Number Equations & Number Lines
Practice writing addition and subtraction equations to match number line diagrams. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Subtracting Decimals: Thousandths
In this exercise, students practice subtracting decimals. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Saddleback College
Algebra2go: Introduction to Subtraction Problem Sets
This resource has three problem sets to practice subtraction. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem. When you have answered all of the questions, ask Charlie how you did.
Khan Academy
Khan Academy: Multi Digit Multiplication
Multiply 2-3 digits by 3-4 digits with carrying. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
GeoGebra
Geogebra: Copy of Classify Two Dimensional Figures
User will drag the vertices of the quadrilaterals to decide on the best possible classification.
Saddleback College
Algebra2go: Subtraction Using an Abacus Problem Sets
This resource has three problem sets to practice subtraction using Abacus worksheet. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem. When you have answered all of the questions,...