Resources and Tools for Elementary Math Specialists and Teachers

Common Core State Standards for Mathematics

Grade(s) K resources related to the following standard:
Counting and Cardinality
Count to tell the number of objects.
4. Understand the relationship between numbers and quantities; connect counting to cardinality.
a. When counting objects, say the number names in the standard order, pairing each object with one and only one number name and each number name with one and only one object.

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These videos focus on specific standards and include examples/illustrations geared to clarify the meaning of the individual standard rather than to be a guide on how to teach it. There is an introductory video for the collection; the videos are organized by grade level and can be downloaded as well as viewed online.
Instructional Strategy, Reference Materials, Video
Grade Level: K, 1, 2, 3, 4, 5
Students can use this interactive Flash applet to practice subitizing and counting groups of objects, to develop awareness of our base-10 number system, and to learn basic addition facts. In the four included games students construct groups of 10 objects, add groups of objects within 20, and identify and record numbers within 20. Auditory prompts support students with limited reading ability.
Activity, Interactive Media
Grade Level: K, 1
This Flash-based game of chance helps children learn to move along a number line either side of a central point, as a precursor to working with negative numbers. Two players, one Plus and one Minus, take turns rolling and adding two dice, and moving forward or backward in their respective directions on the line, with the goal of reaching their end of the line first (0 or 27). The game can be played with the applet or on paper (printable pdf included). A variation involving the choice of adding or subtracting introduces strategic thinking. The Teacher' Notes page suggests strategies for introducing the game, questions to facilitate students' thinking, and a link to a simpler version of the game (Incey Wincey Spider) and a more advanced one (Tug Harder!), both cataloged separately.
Activity, Game, Interactive Media
Grade Level: K, 1, 2