Estimate

Resources and Tools for Elementary Math Specialists and Teachers

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This interactive applet helps develop number sense. The user mentally estimates a number that is represented by an arrow on a number line and then checks the estimate by clicking to have the exact number revealed. Users can choose a number range for whole numbers (between 0 and 10, 100, 1000 or 10,000) or decimals (tenths or hundredths between 0 and 1). An optional scale of tick marks provides guidance. The activity does not provide a scoring component.

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(1 Comments)

Contributed by: Oswego City School District - Publisher, Mark Cogan - Author

Math TopicNumber Sense, Decimals, Number Concepts, Mathematical Processes

Grade LevelK, 1, 2, 3, 4, 5

Resource TypeInteractive Media

Additional Information
- AudienceLearner
- LanguageEnglish (USA)
- Education Topic
- Interdisciplinary Connection
- Professional DevelopmentNo
- ContributorOswego City School District - Publisher, Mark Cogan - Author
- Publication Date2002
- Rights(c) Cathleen J. Chamberlain
  http://resources.oswego.org/games/
- AccessFree access
Standards
- Common Core State Standards for Mathematics
  Select a standards document:
- Counting and Cardinality[K]
- Compare numbers.[K]
- 7. Compare two numbers between 1 and 10 presented as written numerals.[K]
- Number and Operations in Base Ten[K - 5]
- Understand place value.[1 - 2]
- 3. Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.[2]
- Generalize place value understanding for multi-digit whole numbers.[4]
- 2. Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two multi-digit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.[4]
- Understand the place value system.[5]
- 3. Read, write, and compare decimals to thousandths.[5]
- a. Read and write decimals to thousandths using base-ten numerals, number names, and expanded form, e.g., 347.392 = 3 × 100 + 4 × 10 + 7 × 1 + 3 × (1/10) + 9 × (1/100) + 2 × (1/1000).[5]
- b. Compare two decimals to thousandths based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.[5]
- Number and Operations—Fractions[3 - 5]
- Understand decimal notation for fractions, and compare decimal fractions.[4]
- 7. Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual model.[4]
User Comments
- Average
  2
  
  showing its age
  By Uncle Bob on 03/14/2013 - 14:00
- There are better applets and games that do this sort of thing, and accept guesses, give feedback, and call for more and more precision.

Mathlanding is a project of Maryland Public Television in partnership with The Math Forum at Drexel University
and the International Society for Technology in Education. © 2012 Maryland Public Television

Estimate

Common Core State Standards for Mathematics