Curated OER
Adding Doubles (B)
In this adding doubles worksheet, students enhance their addition skills by adding the double numbers. Students add to solve the 21 problems.
Fuel the Brain
Doubles
Have your class practice their skills in adding numbers to have the sum of double that original number. After solving two cute problem stories about rabbits, your youngsters will have to translate their answers into a number sentence.
Curated OER
Use Doubles to Add
In this adding with doubles activity, students read the word problems and use the addition property of doubles to help them solve the addition problems.
Curated OER
Use Doubles to Add
In this addition worksheet, students use doubles to add and complete the eighteen different addition equations. Students also complete a test prep question.
Curated OER
Smart Doubling
Second graders use mental math in calculations involving addition and subtraction. They study doubles facts to work out addition problems mentally using part and or whole reasoning.
Curated OER
Rabbits
Learners review what they think doubling means and double numbers mentally, for example, 5, 12, 16. They share their solutions and discuss how they doubled. They work together on a problem that is beyond mental working and solve...
Curated OER
Pocket Money
Students discover that the mathematics behind this question is a comparison of the rate at which adding a fixed number increases the total compared to continual doubling of a number. In fact no matter what whole numbers you start with,...
Curated OER
M&M: Multiplication Madness
Students analyze the multiplication facts from zero to ten in the ten lessons of this unit. The concepts of mental multiplication and solving word problems are important components of this unit.
Curated OER
Math 6 - Act. 04: Dishes for a Penny
Sixth graders complete activities to determine if they would like to do the dishes on this pay schedule: first night 1 penny, and each night after the amount double.
PBS
Pbs Learning Media: The Right Amount of Cupcake Mix
In this video segment from Cyberchase, Bianca doubles the ingredients in a cupcake recipe that includes fractional amounts.
PBS
Pbs Learning Media: Speed of Ascent
In this video segment from Cyberchase, Hacker and the CyberSquad race to reach the Good Vibration on staircases that grow at different rates and have steps of varying sizes.
PBS
Pbs Learning Media: Staircases of Shangri La
Hacker and the CyberSquad use two different staircases as they race to reach the Good Vibration in this video segment from Cyberchase.
Primary Resources
Primary Resources: Doubling and Halving
Great teacher resources for helping students learn how to double or halve numbers quickly. Includes worksheets, PowerPoint presentations, and classroom games.
National Council of Teachers of Mathematics
Nctm: Illuminations: One Grain of Rice
A lesson plan to use with the book One Grain of Rice by Demi including an activity sheet to help students work the math Rani used to trick the raja into giving rice to the village.
Project Britain
Primary Homework Help: Doubling Numbers Up to 100
The learning activity reviews doubling up to one hundred. Students answer ten questions and can check their answers when finished.
ICT Games
Ict Games: Bridge Doubles
You get to practice doubling numbers up to 20. When you are correct, your car is able to cross the water safely. If you make a mistake, your car goes for a swim!
PBS
Pbs Kids Cyberchase: Double the Donuts
Excellent place to begin understanding exponents especially if you love donuts! Watch the chart keep track of the donuts doubling as a result of the silly dragon's wish.
Quia
Quia: Addition Facts Matching Doubles
Practice your doubles facts with these interactive games at the Quia website. A fun way to sharpen your number sense and doubling skills.
University of Cambridge
University of Cambridge: Nrich: The Amazing Splitting Plant
Figure out how the number of branches keeps doubling on this plant each week for six weeks. The solution is right there on this one page website.