Ohio Mathematics Academic Content Standards (2001)
Number, Number Sense and Operations Standard
Benchmarks (3–4)
J.
Estimate the results of whole number computations using a variety of strategies, and judge the reasonableness.
L.
Use a variety of methods and appropriate tools (mental math, paper and pencil, calculators) for computing with whole numbers.
Grade Level Indicators (Grade 3)
12.
Add and subtract whole numbers with and without regrouping.
15.
Evaluate the reasonableness of computations based upon operations and the numbers involved; e.g., considering relative size, place value and estimates
Grade Level Indicators (Grade 4)
9.
Estimate the results of computations involving whole numbers, fractions and decimals, using a variety of strategies.
13.
Use a variety of methods and appropriate tools for computing with whole numbers; e.g., mental math, paper and pencil, and calculator.
Data Analysis and Probability Standard
Benchmarks (3–4)
B.
Read and interpret tables, charts, graphs (bar, picture, line, line plot), and timelines as sources of information, identify main idea, draw conclusions, and make predictions.
Grade Level Indicators (Grade 3)
4.
Support a conclusion or prediction orally and in writing, using information in a table or graph.
Grade Level Indicators (Grade 4)
2.
Represent and interpret data using tables, bar graphs, line plots and line graphs.
5.
Propose and explain interpretations and predictions based on data displayed in tables, charts and graphs.
Principles and Standards for School Mathematics
Number and Operations Standard
Compute fluently and make reasonable estimates
Expectations (3–5)
develop and use strategies to estimate the results of whole-number computations and to judge the reasonableness of such results;
select appropriate methods and tools for computing with whole numbers from among mental computation, estimation, calculators, and paper and pencil according to the context and nature of the computation and use the selected method or tools.
Data Analysis and Probability Standard
Develop and evaluate inferences and predictions that are based on data
Expectations (3–5)
propose and justify conclusions and predictions that are based on data and design studies to further investigate the conclusions or predictions.