Prime and Composite Number Sort

Understanding why some numbers are classified asprimeand why some arecompositeis an essential math skill.

This concept is a building block foralgebraic thinking, creating the foundation your students will need to practice number operations like multiplication and division.

在our Prime and Composite Number Sorting Activity, students will review number cards and categorize them by whether they have only 2 factors or more.

如何在课堂上使用此主要和复合数字游戏

This game can be used as an independent or partner practice数学中心活动, or as a guided teaching resource for your引导小组.

To play, shuffle the playing cards and lay them face down. One by one, flip playing cards over and place them under either the Prime Number or Composite Number category cards.

To make this a 2-player game, shuffle the cards and split the deck equally between the players. Each player then takes turns placing a card under the category board where it belongs.

从我们的素数和复合数字游戏中获得更多

此资源不仅仅是纸牌游戏！查看这些有关如何将这种有趣的分类练习变成额外学习机会的想法：

Scoot Activity

要进行有趣的热身活动，请为班级中的每个学生提供数字卡。将Prime和Composite Number类别卡发布在您的课堂的对面墙上。没有讲话，学生必须走上他们认为自己的人数的墙。一旦每个人都到位，请让两组确定所有数字是否属于。

Mirror Game

This activity is a spin on the classic “Newlywed Game” and works best with small groups because you’ll need enough dry erase boards and markers for each student. Divide the students into 2 groups, and have them sit down in 2 lines facing each other. Read a number off one of the task cards and give the players 10 seconds to write on their board whether it’s a Prime or Composite Number. On your cue (for example, you say “Ready, Set, Go!”) the students turn their boards around so their partner can see their answer. If both students in a pair have the correct answer, they get 2 points. If one has the correct answer, the team gets 1 point.

素数和复合号码大脑克星

Read a number off one of the task cards and give your students 20 seconds to write down as many factors for the number as they can.

Change the Difficulty Level if Needed

为了使该游戏更具挑战性，请让学生列出每个数字的因素，然后再将其列入各自的类别。

If this game is too challenging for some students, the resource can be scaled down by taking out some of the cards.

Easily Prepare This Resource for Your Students

在卡片纸上打印任务卡，以增加耐用性和寿命。切出任务卡，然后将所有件放入文件夹或大型信封中。

Before You Download

Use the drop-down icon on the Download button to choose between the PDF or Google Slides version of this resource. An answer key is also included with this download.

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This resource was created by Lauren Blankenship, a teacher in Florida and a Teach Starter Collaborator.

通过这些更多工具来巩固学生对主要和复合数字的了解，以填补您的日常数学课程：