Demonstrates how to use a number line to visualize and solve addition and subtraction word problems. [4:27]

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Given a 2-digit addition or subtraction problem, video demonstrates how to decide which number line matches up with it. [1:56]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This comprehensive study guide highlights the main terms and formulas needed to understand compound inequalities. Examples are included.

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In this module, students reconnect with and deepen their understanding of statistics and probability concepts first introduced in Grades 6, 7, and 8. Students develop a set of tools for understanding and interpreting variability in data, and begin to make more informed decisions from data. They work with data distributions of various shapes, centers, and spreads. Students build on their experience with bivariate quantitative data from Grade 8. This module sets the stage for more extensive work with sampling and inference in later grades.

Find the rest of the EngageNY Mathematics resources at https://archive.org/details/engageny-mathematics.

Use a number line to graph inequalities

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Students work with a number line and football to model adding and subtracting integers.

Second grade students are asked to apply two complementary processes: counting and grouping. The conceptual understanding of the place value of a number and combining/separating numbers using place value, are critical aspects of mathematical thinking.

Students should be able to recognize what makes one number greater or smaller than another, using place value understanding which is crucial to Common Core mastery. This lesson combines math and science by having students order planets according to temperature. A detailed plan and video of students engaged in the lesson are included.

Students explore numbers in a variety of ways to understand how to compare three-digit numbers based on an understanding of place value. This lesson includes an interactive number line video, samples of student work, and a printable assessment worksheet.

Students will compare and order integers on the number line. This lesson includes a detailed plan with lots of examples, a screencast of the lesson, and slides containing notes and problems.

Students graph the solutions of inequality on a number line and explain the solutions.

SWBAT identify the subtraction and addition sign and understand their function by hopping a bunny up and down a number line.

Using decimals and finding perimeter and area all while learning about the metric system.

The number line is a useful tool when ordering positive and negative rational numbers.

The number line is a useful tool to use when ordering rational numbers.

Preparing for a test requires lots of practice and this review will help students show what they know about how to use a number line.

Students demonstrate comfort with addition, but show less ease with subtraction. Repeated practice with subtraction is necessary to build fluency.

The double number line will help students figure out problems that involve two quantities.