Content Area: Math

 

Index: 4.1B Grade 2 CPI 3

 

Standard: 4.1 - Number and Numerical Operations

 

Strand: B - Numerical Operations

 

Cumulative Progress Indicator: 3 - The student will develop proficiency with basic addition and subtraction number facts using a variety of fact strategies, such as “counting on” and “near doubles”) and then commit them to memory.

 

Grade: 2

 

Sample Activities:

 

·        Students play one more than dominoes by changing the regular rules so that a domino can be placed next to another only if it has dots showing one more than the other. Dominoes of any number can be played next to others that show 6 (or 9 in a set of double nines). One less than dominoes is also popular.

 

·        Second graders regularly use the doubles and near doubles, the make ten, and the counting on and counting back strategies for addition and subtraction. Practice sets of problems are structured so that use of all of these strategies is encouraged and the students are regularly asked to explain the procedures they are using.

 

·        Students play games like addition war to practice their basic facts. Each of two children has half of a deck of playing cards with the face cards removed. They each turn up a card and the person who wins the trick is the first to say the sum (or difference) of the two numbers showing. Calculators may be used to check answers, if necessary.

 

·        Students use the calculator to count one more than by pressing + 1= = =. The display will increase by one every time the student presses the = key. Any number can replace the 1 key.

 

·        Students use two dice to play board games (Chutes and Ladders or home-made games). These situations encourage rapid recall of addition facts in a natural way. In order to extend practice to larger numbers, students may use 10-sided dice.

 

·        Students use computer games such as Math Blaster Plus or Math Rabbit to practice basic facts.