Working with positive and negative numbers
Students start the year adding, subtracting, multiplying, and dividing with negative numbers. Expect to see them reasoning about temperature drops, money owed, and points lost in a game.
This is the year math runs on ratios and negative numbers. Students work with positive and negative numbers on a number line, then use them to add, subtract, multiply, and divide in real situations like temperature or money. They use ratios and percents to solve problems with tips, discounts, and scale drawings. By spring, students can find the unit rate from a table, work with negative numbers, and solve a two-step equation like 3x + 5 = 20.
Students start the year adding, subtracting, multiplying, and dividing with negative numbers. Expect to see them reasoning about temperature drops, money owed, and points lost in a game.
Students use ratios and percents to solve everyday problems like tips, discounts, taxes, and recipe scaling. They learn to spot when two quantities grow at the same steady rate.
Students write and solve equations with letters standing in for unknown numbers. Word problems get longer, and students start showing their steps to find an answer.
Students find the area and circumference of circles and the volume of boxes and prisms. They also work with scale drawings, like shrinking a room down to fit on graph paper.
Students compare data from two groups, like test scores in two classes, and figure out the chances of events such as a coin flip or a spinner landing on red. They use small samples to make predictions about larger groups.
Students read a math problem carefully, figure out what it is actually asking, and keep trying even when the first approach does not work.
Students take a real problem, strip away the story to work with the numbers, then put the context back to check that the answer actually makes sense.
Students explain why their math answer makes sense, using examples or logic to back it up. They also listen to a classmate's reasoning and say specifically what holds up or what doesn't.
Students use math to make sense of real situations, like figuring out a budget, reading a graph, or planning a schedule. The goal is to see math as a tool for solving problems that actually come up outside of school.
Students choose the right tool for the job, whether that means a calculator, a quick estimate in their head, or working it out on paper. The skill is knowing which tool fits the problem.
Students use exact math terms, label answers with the right units (like inches or dollars), and check their calculations carefully. Sloppy shortcuts lead to wrong answers, so precision matters at every step.
Students notice patterns and hidden structure in math problems, like spotting that two expressions are equivalent or that a shape has symmetry. Recognizing that structure helps students solve problems faster and with fewer steps.
Students notice when the same steps keep showing up in a problem and use that pattern to find a shortcut or rule. Over time, they check whether the shortcut holds up and explain why it works.
| Standard | Definition | Code |
|---|---|---|
| Make Sense of Problems | Students read a math problem carefully, figure out what it is actually asking, and keep trying even when the first approach does not work. | DE-MATH.MP.7.1 |
| Reason Abstractly | Students take a real problem, strip away the story to work with the numbers, then put the context back to check that the answer actually makes sense. | DE-MATH.MP.7.2 |
| Construct Arguments | Students explain why their math answer makes sense, using examples or logic to back it up. They also listen to a classmate's reasoning and say specifically what holds up or what doesn't. | DE-MATH.MP.7.3 |
| Model with Mathematics | Students use math to make sense of real situations, like figuring out a budget, reading a graph, or planning a schedule. The goal is to see math as a tool for solving problems that actually come up outside of school. | DE-MATH.MP.7.4 |
| Use Tools Strategically | Students choose the right tool for the job, whether that means a calculator, a quick estimate in their head, or working it out on paper. The skill is knowing which tool fits the problem. | DE-MATH.MP.7.5 |
| Attend to Precision | Students use exact math terms, label answers with the right units (like inches or dollars), and check their calculations carefully. Sloppy shortcuts lead to wrong answers, so precision matters at every step. | DE-MATH.MP.7.6 |
| Use Structure | Students notice patterns and hidden structure in math problems, like spotting that two expressions are equivalent or that a shape has symmetry. Recognizing that structure helps students solve problems faster and with fewer steps. | DE-MATH.MP.7.7 |
| Express Regularity | Students notice when the same steps keep showing up in a problem and use that pattern to find a shortcut or rule. Over time, they check whether the shortcut holds up and explain why it works. | DE-MATH.MP.7.8 |
Seventh graders work with whole numbers, fractions, and negative numbers to solve problems. They use number-system rules to compare, convert, and calculate across all three types.
Seventh graders write and solve expressions using addition, subtraction, multiplication, and division. They set up equations to match real problems, then work through the steps to find the answer.
Students read and build tables and graphs, then use the numbers to draw conclusions about what the data shows. This standard covers the reasoning behind summarizing information, not just plotting points.
Students sort, describe, and measure flat shapes like triangles and rectangles alongside solid shapes like cubes and cylinders. They use angle measures, side lengths, and other properties to put shapes into categories and explain why they belong there.
Students use ratios and proportions to solve everyday problems, like figuring out unit prices, scaling a recipe, or finding a missing measurement when two quantities are related. The math connects to situations they actually encounter.
| Standard | Definition | Code |
|---|---|---|
| Counting and Number | Seventh graders work with whole numbers, fractions, and negative numbers to solve problems. They use number-system rules to compare, convert, and calculate across all three types. | DE-MATH.K8.7.1 |
| Operations and Algebraic Thinking | Seventh graders write and solve expressions using addition, subtraction, multiplication, and division. They set up equations to match real problems, then work through the steps to find the answer. | DE-MATH.K8.7.2 |
| Measurement and Data | Students read and build tables and graphs, then use the numbers to draw conclusions about what the data shows. This standard covers the reasoning behind summarizing information, not just plotting points. | DE-MATH.K8.7.3 |
| Geometry | Students sort, describe, and measure flat shapes like triangles and rectangles alongside solid shapes like cubes and cylinders. They use angle measures, side lengths, and other properties to put shapes into categories and explain why they belong there. | DE-MATH.K8.7.4 |
| Ratios and Proportional Relationships | Students use ratios and proportions to solve everyday problems, like figuring out unit prices, scaling a recipe, or finding a missing measurement when two quantities are related. The math connects to situations they actually encounter. | DE-MATH.K8.7.5 |
Delaware's spring summative math test for grades 3 through 8, aligned to the Delaware Math Standards.
Students work with positive and negative numbers, solve problems with ratios and percents, and write and solve equations with a variable. They also calculate things like sales tax, tips, and discounts, and reason about chance using simple probability.
Ask students to explain their thinking out loud before checking the answer. If they get stuck, have them draw a picture, try smaller numbers, or estimate first. The goal is steady reasoning, not speed.
Negative numbers and integer operations trip up many students, especially subtracting a negative. Proportional reasoning is the other common sticking point. Students often set up ratios but mix up which quantity goes where.
Students should be able to figure out a tip at a restaurant, a discount on a sale price, or how much sales tax adds to a total. Practicing with real receipts and menus at home makes this stick faster than worksheets.
Start with unit rates and proportional relationships in tables and graphs, then move to percent problems once students can identify the constant of proportionality. Save multi-step percent change problems for later in the unit, after integer operations are solid.
Students solve equations like 3x plus 7 equals 22, where they need to undo two steps to find the variable. They also write equations from word problems, which is often harder than the solving itself.
Students should be fluent with positive and negative numbers, comfortable solving two-step equations, and able to recognize proportional relationships in tables, graphs, and equations. If those three areas feel automatic by spring, the jump to eighth grade goes smoothly.
Pick one skill and do three or four problems, not twenty. Integer practice, a percent off a price, or solving one equation works well. Short and frequent beats long and occasional.
Plan for about four to six weeks total, usually near the end of the year. Students compare data sets using measures of center and spread, and use simple probability models to predict outcomes. Real data from sports, weather, or surveys keeps it grounded.