3-5
Project this lesson on a whiteboard and watch your students “number line dance” their way to fluency in estimation of products. The lesson is scaffolded to start students finding basic multiplication facts on a number line and ends with students estimating four digit products on a number line. Use the lesson to teach estimation of products or as a culmination of your own estimation of products lesson.
3-5, 6-8
If a tree could talk, we could ask it how old it is. Here is a mathematical way to estimate the age of your schoolyard trees. Students will measure circumference of trees in order to find diameter and calculate age of local trees using a growth rate table.
Pre-K-2, 3-5
Learn how to count, collect, exchange, and make change for coins by manipulating coins using an array representation.
Pre-K-2, 3-5, 6-8, 9-12
Need a pentagonal pyramid that's six inches tall? Or a number line that goes from ‑18 to 32 by 5's? You can create all those things and more! Place the images you want, then export it as a PDF or as a JPG image.
3-5, 6-8
Dividing Numbers into Two Factors and Building Arrays to Represent Each Factorization
3-5, 6-8
Explore different representations for fractions including improper
fractions, mixed numbers, decimals, and percentages. Additionally, there
are length, area, region, and set models.
Pre-K-2, 3-5, 6-8, 9-12
This tool allows you to manipulate various geometric solids and investigate their properties.
3-5, 6-8, 9-12
Using this interactive tool, you can practice arithmetic and algebraic skills, and investigate the important concept of equivalence.3-5, 6-8
Use this tool to strengthen understanding and computation of numerical expressions and equality using a balance scale.
3-5, 6-8
Use this tool to build up to algebraic thinking by exploring how to balance shapes of unknown weight.
