Understand the usefulness of approximations. 0506.4.11

Links verified on 9/16/2014

1. Anti-Homework - estimate angles from 0 to 180 - correct answers give you a homework grenade to get rid of assignments [gets progressively harder]
2. Approximation - somewhat advanced quiz
3. Approximation - rounding to the nearest whole number
4. Approximation Activity - Why not make an approximation? Have a try.
5. Approximation: Trial and improvement - When using trial and improvement guess what the answer might be, then improve on it until you get close to the correct answer.
6. Comparison Estimator - Similar to Estimator but compares two sets of objects.
7. Estimate - (use as a whole class activity) Select a range, display tick marks and estimate before revealing the answer.
8. Estimation Valley Golf - estimate the distance to the hole using number computation.
9. Estimating by Rounding - Addition with regrouping - instruction and review, practice, and a quiz and
10. Estimating by Rounding - Subtraction with regrouping - instruction and review, practice, and a quiz and
11. Estimator - Practice estimation skills by determining the number of objects, length, or area. (parameters: error tolerance)
12. Guess the Number - developing skills in halving and estimation
13. Half Court Rounding - Round the number at the bottom of the page. Then, click enter. If you are correct, your character will make the basket. If you are wrong, he will miss. Try to get the highest score possible in 90 seconds.
14. Home Run Derby Math - you don't have time to add, just estimate the correct answer [addition, subtraction, or multiplication]
15. Let's Go Shopping - estimate by rounding to the nearest dollar as they shop
16. Making Estimates - introduction to making estimates while shopping [Uses UK monetary values]
17. More or Less Estimator - Similar to 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.
18. Pinocchio estimation game - suggested game for developing the skill of estimation
19. Round About - estimate by rounding
20. Rounding Off - Three levels are available in this game from BBC Education
21. Spy Guys Interactive - Rounding Numbers - interactive video lesson
22. That's Right - estimate measurements in real-world problems using money

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