The purpose of this task is for learners to use the position of a number on the number line to round the number without knowing its exact value. Though this task deals most directly with rounding, it also requires students to understand...

In this interactive, students use logic to solve three riddles involving a frog jumping contest and then place the contestants' jumps at the correct points on the number line. Numbers are randomized so that the frogs' placements on the...

Print or create worksheets or flashcards to assess students' understanding of place value, comparing numbers, and ordering numbers with decimals.

The purpose of this task is for students to reason about base-ten numbers on the number line in a way that will require them to use what they know about place value. Students first represent addition and subtraction on the number line in...

In this interactive, students use logic to solve three riddles involving a frog jumping contest and then place the contestants' jumps at the correct points on the number line. Numbers are randomized so that the frogs' placements on the...

An activity where students learn the meanings of metric prefixes, and how to use them with decimal numbers and with different units of measurement.

The process of converting between different number bases is actually fairly simple, but the thinking behind it can seem a bit confusing at first. And while the topic of different bases may seem somewhat pointless to you, the rise of...

AAA Math's interactive tutorials and lessons assist students grades K-8 improve their understanding of a wide range of arithmetic topics. Students are provided with immediate feedback as they complete the "Learn," "Practice," and "Play"...

[Free Registration/Login may be required to access all resource tools.] Round decimals using a number line.

Browse resources related to second-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.