Mathematical Process Standards>Creating and Using Representations to Organize and Communicate Math Ideas(TEKS.Math.7.1.E)
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Texas 7th Grade Math › Mathematical Process Standards>Creating and Using Representations to Organize and Communicate Math Ideas(TEKS.Math.7.1.E)
The library tracked book checkouts by grade and genre last week. 6th grade: fiction 28, nonfiction 15, graphic novels 19. 7th grade: fiction 22, nonfiction 20, graphic novels 14. 8th grade: fiction 25, nonfiction 18, graphic novels 21. You want to compare grade and genre together.
Which representation best organizes this data to compare groups?
A two-way table with grades as rows and genres (fiction, nonfiction, graphic novels) as columns
A bar chart of the total checkouts for all grades combined by genre only
A single total number of all checkouts for the week
A list of random book titles checked out
Explanation
A two-way table neatly displays counts for each grade–genre pair, making it easy to compare across both categories. A genre-only bar chart loses the grade breakdown. A single total and a list of titles do not support comparing groups by two variables.