Interactive
Education.com

Education.com: Counting Pizza Party

For Students Pre-K - K
[Free Registration/Login Required] There's no pizza party like a counting pizza party! In this math game, students count the correct number of toppings and add them to the pizza to match the customer's order.
Professional Doc
Other

Erikson Institute: Numbers and Fun With Anno's Counting Book

For Teachers Pre-K - K Standards
There are multiple opportunities to teach number sense with the book Anno's Counting Book. This teacher explains how she used it in her preschool classroom to practice counting objects and number recognition.
Article
Other

Erikson Institute: Why One to One Correspondence Matters

For Teachers Pre-K - K Standards
A hallmark of accurate counting is when preschoolers begin to assign one number, and only one number, to each object as they count. We see this achievement when a child touches or tags each object in time with saying the counting words....
Activity
Other

Mega Math: One to One Correspondence

For Students 9th - 10th
This site contains a simple example of one-to-one correspondence used in the real world.
Lesson Plan
Utah Education Network

Uen: Box It Up

For Teachers 5th
This lesson engages students in reading comprehension and measurement activities related to Rod Clements's book, Counting on Frank. Students will write a summary about what the character found to measure. Students will then find objects...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Mg, G Gmd Global Positioning System Ii

For Teachers 9th - 10th Standards
Satellites communicate with a GPS device and establish the distance between them and their locations. The set of points at a fixed distance from a satellite form a sphere so when the GPS receives its distance from a given satellite, this...