In this application of arithmetic, students analyze the changing population of bison in the Americas. Using real-world data and applying key math concepts, students will do some sophisticated analysis using basic skills.  These are the key math concepts covered: Place value Skip counting Doubling Data analysis Given the wide disparity in the population of bison over several centuries, students will be analyzing data in the millions but using place value to gain a clear understanding of the numbers involved.

In this video tutorial, students are shown how to use their counting skills to add two numbers. Three worked-out examples provide an opportunity for students to see how to use their counting skills to add.

In this video tutorial, students are shown how to use their counting skills to subtract two numbers. Three detailed examples show how to use counting to subtract.

In this video tutorial, students are shown how to use the technique of Counting On to improve the speed and accuracy of their counting, using three different examples. The video develops the concept of counting and cardinality.

In this video tutorial, students are shown how to use Skip Counting and Counting On to quickly and accurately count large numbers of items. This video lays the groundwork for developing addition skills.

In this video tutorial, students are shown how to Skip Count by 2's, 5's, and 10's using three different examples. The video builds on the concept of counting and cardinality.

This cheat sheet gathers together the resources on the topic of counting and cardinality. See the descriptions and links below. Each link takes you to a collection of resources around that topic. The middle column indicates the number of resources available and the third column takes you to page on Media4Math where those resources can be found.

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In this PowerPoint presentation, have students use their counting skills to add numbers.

In this PowerPoint presentation, have students use their counting skills to add numbers.

This interactive reviews key third and fourth grade vocabulary on multiplication and division.

This tutorial provides an overview of using skip-counting to multiply numbers.

In this drag-and-drop game, have students practice their counting skills to add numbers. This includes using Counting On. This game generates thousands of different combinations, offering an ideal opportunity for skill review in a game format.

In this drag-and-drop game, have students practice their counting skills to subtract numbers. This includes using Counting On and counting backward. This game generates thousands of different combinations, offering an ideal opportunity for skill review in a game format.

In this drag-and-drop game, have students practice their Counting On skills. Students count starting at a number greater than 1. This game generates thousands of different combinations, offering an ideal opportunity for skill review in a game format.

In this drag-and-drop game, have students practice their Skip Counting skills. This includes Skip Counting by 2's, 3's, 4's, 5's, and 10's. This game generates thousands of different combinations, offering an ideal opportunity for skill review in a game format.

This is the transcript to the video entitled "Video Tutorial: Counting and Addition."

This is the transcript to the video entitled "Video Tutorial: Counting and Subtraction."

This is the transcript to the video entitled "Video Tutorial: Counting On."

This is the transcript to the video entitled "Video Tutorial: Counting Strategies."

This is the transcript to the video entitled "Video Tutorial: Skip Counting."