## Common Core State Standards for Mathematics

Grade(s) 1 resources related to the following standard:
Operations and Algebraic Thinking
Represent and solve problems involving addition and subtraction.
2. Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

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This 27-minute video demonstrates Hungary's approach to teaching primary math and compares it to practices in the UK. Hungarian pupils absorb concepts early on, manipulating objects, using visual models and learning mental math techniques. Teachers introduce written methods when pupils have a solid grasp of the mathematical processes they represent and stronger kinesthetic skills. Lessons through the first five years are lively and logically-structured and involve all children actively. The video describes how the training of Hungarian teachers provides thorough grounding in the math they need to know and the methods they should use to teach math effectively. A side bar includes reflection questions for viewers.
Instructional Strategy, Video
Grade Level: K, 1, 2, 3, 4
In this problem students practice addition and subtraction (and possibly multiplication) while developing systematic work strategies. Given two types of ladybirds, each with either 4 or 7 spots, learners explore ways of combining them to achieve different total numbers of spots. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, ideas for extension and support, and links to related games.
Activity
In this online book by Greg Tang students look at pieces of art and find the specified combinations of numbers. When students click on the groupings they will highlight and then move into the recording column as an addition equation. The book contains twelve pieces of art in which students find combinations.
Activity, Interactive Media, Problem Set, Image Set
This unit of instruction teaches first and second grade students to value money as a concrete system of numbers and shows them economically responsible ways to use money and make meaning of the value of money. The unit includes the U.S. coin names, values, equivalencies and purchasing power. Problem sets and picture purchase cards are provided.
Unit of Instruction
This activity uses Cuisenaire Rods to develop flexibility and fluency with addition facts and to encourage systematic thinking. Several different challenges are posed, all involving making equivalent trains using a given number of rods of different colors. An interactive Flash Cuisenaire applet is provided as an alternative to using real rods. The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, and a link to a related activity, Cuisenaire Counting (cataloged separately).
Activity, Interactive Media
This blog entry discusses the difficulties of keeping students with learning disabilities at pace with their peers. Angelia provides a solution that helps her, which involves progress monitoring through weekly review tests. She provides the reader with an example of one of these tests (which checks for operation choice in word problems) and three examples of her progress monitoring data sheets.
Assessment, Instructional Strategy, Community
Grade Level: K, 1, 2, 3
This iOS app contains six different math, logic, and puzzle games: Tower of Hanoi, Magic Shapes, Ravine Crossing, Math Comics, The Frog, and The Water Jug. Each game contains various levels of difficulty to challenge students.
Activity, Game, Interactive Media, Mobile App
Grade Level: 1, 2, 3, 4, 5, 6+