OH.NNSO. Number, Number Sense and Operations: Students demonstrate number sense, including an understanding of number systems and operations and how they relate to one another. Students compute fluently and make reasonable estimates using paper and pencil, technology-supported and mental methods.
NNSO.2. Grade Level Indicator: Number and Number Systems: Use place value concepts to represent whole numbers and decimals using numerals, words, expanded notation and physical models. For example:
NNSO.2.c. Model the size of 1000 in multiple ways; e.g., packaging 1000 objects into 10 boxes of 100, modeling a meter with centimeter and decimeter strips, or gathering 1000 pop-can tabs.
OH.PFA. Patterns, Functions and Algebra: Students use patterns, relations and functions to model, represent and analyze problem situations that involve variable quantities. Students analyze, model and solve problems using various representations such as tables, graphs and equations.
PFA.C. Write and solve open sentences and explain strategies.
PFA.D. Represent an unknown quantity as a variable using a symbol, including letters.
PFA.E. Use variables to create and solve equations representing problem situations.