Learning to Subtract Integers (positive and negative numbers)

Everything you need** to set up an exciting and engaging Game Center in which students compete against themselves to beat their best time completing the Race for the Stars Game boards. Students time their partner completing the game board and post the time on the included poster using the included pen. A sheet of 60 computer-ready Avery name labels is also included. When students beat their posted personal best they put up the new time and cover the old time with a star sticker (plenty are included). A place for best times for both the A-K game board and the L-Z game board. Directions are included.

Click here if you want to read the directions now.
**Except the stopwatch and the games. If you need a stopwatch order item #2112 for $49.
If you need a Race for the Stars Game you must purchase it separately (for $24) you can find it here.  

These are the rest of the Subtraction facts that the Common Core suggests that students be able to compute mentally such as 18-15, 15-5, and 19-8. These obviously build on the basic single digit facts such as 8-5, 5-5, and 9-8. Students should find these fairly easy to master but they still need some practice to commit them to memory. LOOK OUT! Because all the answers are two digits, the number of problems students can be expected to answer will go down!  You must give the special Subtract from 20 Writing Speed Test to set new, lower, goals for your students.  To the left you can see the sequence of facts that will be learned in the Subtract from 20 program.  Otherwise the program is exactly the same as the basic Subtraction Rocket Math program and uses the same forms–that can be found in the forms and information drawer.
 

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Mixed Integers displays problems on a vertical number line and then teaches students two rules about how to solve problems that add or subtract positive and negative numbers.
Rule 1:  When you add a positive number OR subtract a negative number, go UP.
Rule 2:  When you subtract a positive number OR add a negative number, go DOWN.

Students learn how these rules play out when starting with a positive number and a negative number, gradually learn these two variations of all four types of problems.  They learn to solve a problem type using the number line and then to recognize the pattern of each problem type by working several examples of each type.  This practice gives them a chance to build fluency with each problem type as they work with their partner on the top half of the page.  You will probably not be surprised that there is a one-minute test on each set.  The goals are slightly different than before.  Students are to be 100% accurate and to meet or beat their goal from the special writing speed test for mixed integers.

8 online lessons teach students how each type of problem is solved and why it is correct.

(1) Mixed Integers Set A1 Positive add a positive

(2) Mixed Integers Set A2 Positive subtract a positive

(3) Mixed Integers Set D Negative add a positive

(4) Mixed Integers Set G Negative subtract a positive

(5) Mixed Integers Set J Negative subtract a negative

(6) Mixed Integers Set M Positive subtract a negative

(7) Mixed Integers Set P Positive add a negative

(8) Mixed Integers Set S Negative add a negative

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One dozen Wall Charts (with directions, stickers, and goal arrows) AND one dozen Corrections Posters.