In this packet, students will have the opportunity to practice finding missing numbers in sequences. Some sequences are based on addition; some sequences are based on subtraction. This package consists of two activities: a worksheet activity and a game/math center activity.
In the three-page worksheet activity, students are given twenty-five number sequences in which one number in each sequence is missing. Students must determine the pattern of each number sequence (either addition or subtraction) and find the missing number. Each of the missing numbers is listed on a coloring page answer sheet. Each of the twenty-five sequences has a color associated with it (red, orange, yellow, blue, green, or purple). When students determine the missing number for each sequence, they are directed to color the space with the correct number the appropriate color on the answer sheet.
The game/math center activity consists of half-page activity cards and spinners. The numbers spinner (Spinner A) has twenty-four numbers between 1 and 100. The two other spinners included (both labeled Spinner B) have twelve spaces each. One is based on addition (has +1 through +9 in the sections); one is based on subtraction (has -1 through -9 in the sections). To play the game, students should spin the numbers spinner (Spinner A) first to get a beginning number for the sequence they are building and record it in the correct space on the activity card. Next, they should spin the Spinner B to determine what number they will use as a guide to continue building a sequence. Depending on the level of your students, you may choose to use only the addition spinner, both addition and subtraction spinners, or only the subtraction spinner. The subtraction spinner provides an extra challenge because students may need to work with negative numbers. The activity cards have space for students to build five sequences. To make this activity competitive, we have directed students to total each sequence and the grand total of all sequences on their cards. Here we have given you the choice as to how you wish the students to proceed. One card set tells students that the “largest number is the winner”. The second card set tells students that the “smallest number is the winner”. The third card set doesn’t say how the winner is determined. Use this card any way you like. For example, winners could be odd numbers, even numbers, numbers divisible by a specific number, or the student closest to the target number you have chosen, etc.
Included in this package –
- Teacher instructions
- Student instructions for the Missing Number Sequences worksheet activity
- Answer key with the missing numbers
- Color key of the coloring answer sheet
- Activity cards (half-page) – three versions – 1) largest number winner, 2) smallest number winner, 3) teacher’s choice winner
- Three spinners (Assemble these in your favorite way to make spinners.)
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