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8th Grade Interactive Math Skill Builders

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Estimating - CCSS 7.NS.A.1

Links verified on 04/24/2018

1. Comparison Estimator.

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Compares two sets of objects by estimating. (Other related resources are available under the learner tab.)  SEE MORE
 
2. Estimate Cube Roots.

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Practice estimating cube roots. A scratchpad is available to doodle over the top of the question. SEE MORE
 
3. Estimate Positive and Negative Square Roots.

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Practice estimating positive and negative square roots. Scratch pad available to doodle over the problem. SEE MORE
 
4. Estimating by Rounding.

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Addition with regrouping. Lesson with practice problems.  SEE MORE
 
5. Estimating by Rounding.

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Subtraction with regrouping. Lesson with practice problems.  SEE MORE
 
6. Estimation Valley Golf.

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A golf game in which the better you estimate, the more accurate your shot. Play our nine-hole course called Estimation Valley, or, go for the six-hole course or putt-putt. This game works on all devices. Demo video available.  SEE MORE
 
7. Estimator.

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Practice estimation skills by determining the number of objects, length, or area. (parameters: error tolerance) Additional related resources located under the learner tab.  SEE MORE
 
8. Front End Estimation of Sums.

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Front end estimation lesson and practice problems. No hints or clues given.  SEE MORE
 
9. Glowla's Estimation Contraption.

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Glowla has created a machine will show you a bunch of numbers. You need to type in an estimate of what those numbers would add up to. The secret to solving this puzzle is to round the numbers before adding them together. SEE MORE
 
10. More or Less Estimator.

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Similar to the Estimator activity but states a quantity and asks the user to estimate whether the set of objects is more or less than the number given.  SEE MORE
 
11. Spy Guys Interactive - Rounding Numbers.

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Watch the video and respond at various places Lesson 9. This video includes sections which ask students to input responses.  SEE MORE
 
12. Weigh the Wangdoodles.

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Your job is to find the weight of each Wangdoodle using the information provided by the scales. To be successful, you will have to make sure that the weight you assign to each Wangdoodle works on each scale. This activity is a fun but challenging introduction to multiple algebraic equations.  SEE MORE
 

Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles.
 

  

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