Review by Debbie Gorrell, Common Sense Education | Updated July 2015
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Electric Sums - Lumio Addition & Subtraction (Full Version)

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Charge up number sense, estimation, and math fluency with fun games

Subjects & skills
  • Math

  • Critical Thinking
Grades This grade range is based on learning appropriateness and doesn't take into account privacy. It's determined by Common Sense Education, not the product's publisher.
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Pros: Kids learn addition and subtraction basics and build fluency in a fun setting.

Cons: Learning progress can't be tracked, and the reward system is less than stellar.

Bottom Line: A solid introduction to adding and subtracting with a focus on place values through hundreds, but plan to do your own tracking of learning progress and goals.

In the classroom, use Electric Sums – Lumio Addition & Subtraction (Full Version) as an instructional support tool. Kids should have knowledge of place values through hundreds and should be able to add and subtract two-digit numbers before playing. They should also know how to write numbers in expanded forms. To start, kids should work individually to complete a level within the Fix It Digit! mode. Then, come together as a class and discuss the level: Were they able to earn three lightning bolts? Continue to allow kids to complete levels and move to the next game mode when they are ready. As an extension activity, have kids write their own addition and subtraction problems and switch with a partner to solve them.

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Electric Sums – Lumio Addition & Subtraction (Full Version) is organized into two learning pathways: Fix It Digit! and Digit's Black Out. Each mode includes more than 30 levels that begin by helping kids build comprehension and end by reinforcing concepts and helping build fact fluency. In Fix It Digits!, kids complete electric circuit puzzles to help Digit fix items around the house. The puzzles require kids to decompose numbers and then add them using place value. In earlier problems, kids decompose addends and the sum is calculated for them. Later problems require them to calculate sums on their own. In Digit's Black Out, kids help Bobo the robot join points on a number line. The learning pathway is similar to Fix It Digit!, but a number line is introduced, kids work with subtraction problems, and numbers are partially decomposed, or partitioned. Kids can earn up to three lightning bolt rewards for each correct answer.

Electric Sums – Lumio Addition & Subtraction (Full Version) is a game that teaches kids strategies for addition and subtraction with 3-digit numbers, addressing an important Grade 3 Common Core math standard. Kids decompose numbers and add or subtract using place values. They begin by using a slider to break numbers into hundreds, tens, and ones. This helps kids add larger numbers by adding the digits in each place value. As they progress through the game, kids use a number line to help them add and subtract. This strategy helps kids visualize solutions as they work toward the use of equations and the concept of balancing equations in order to solve problems. If kids struggle, they can access visual cues and hints. Constructive feedback is given for incorrect solutions.

Overall Rating

Engagement Is the product stimulating, entertaining, and engrossing? Will kids want to return?

Fun sounds and colorful graphics engage, and kids will enjoy the interactivity of the sliders as they solve problems.

Pedagogy Is learning content seamlessly baked-in, and do kids build conceptual understanding? Is the product adaptable and empowering? Will skills transfer?

Instructional support is embedded within the two learning pathways, and levels increase in difficulty as kids play. More traditional number sentences could be useful for transferring knowledge to other settings.

Support Does the product take into account learners of varying abilities, skill levels, and learning styles? Does it address both struggling and advanced students?

Animated instructions and easily accessible hints help kids solve problems. Audio support is also provided; more support for parents and teachers would improve the experience.

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