Implementing VEX 123 STEM Labs
STEM Labs are designed to be the online teacher’s manual for VEX 123. Like a printed teacher’s manual, the teacher-facing content of the STEM Labs provides all of the resources, materials, and information needed to be able to plan, teach, and assess with VEX 123. The Lab Image Slideshows are the student-facing companion to this material. For more detailed information about how to implement a STEM Lab in your classroom, see the Implementing VEX 123 STEM Labs article.
Goals and Standards
Students will apply
- How to use the 123 Robot to solve addition equations on a number line.
Students will make meaning of
- How values in an addition equation can be represented and solved using a number line.
- How to represent the operation of addition using the 123 Robot on a number line.
Students will be skilled at
- Waking the 123 Robot.
- Placing the 123 Robot at the starting number of the addition equation on the number line.
- Identifying how many button presses are needed to move the 123 Robot and solve for the sum.
- Pushing the button on the 123 Robot to get it to move.
Students will know
- One space moved on the number line is equal to the addition of one.
- Students will be able to describe the 1:1 relationship between one button pressed and the movement of the robot one square on the 123 Field.
- Students will be able to count forward beginning from a given number, instead of having to begin at 1.
- Students will be able to model and solve addition equations using a 123 Robot and a number line.
- Students will describe the steps for pressing the move button on the 123 Robot once to move the robot one number on the number line, two times to move the 123 Robot two spaces on the number line, etc, in the Play Part 1 and Mid-Play Break sections.
- In the Play sections, students will practice counting forward from the first addend in ascending order to find the sum of an equation.
- Students will model starting their robot on the number line on the first addend, press the move button a number of times that equals the second addend in order to have the 123 Robot stop on the sum. In Play Part 1 they will practice these steps with the teacher, in Play Part 2, they will work with their group.
- Students will describe the number of button presses it takes to model an equation during the activity during the Mid-Play Break and Play Part 2.
- Students will correctly count forward from the first addend, in ascending order, the number of spaces equal to the second addend in order to reach the sum of an addition equation on a number line during Play Part 2.
- Students will work with their groups to solve an addition equation with the 123 Robot on a number line during Play Part 2.
Connections to Standards
Common Core State Standards (CCSS)
CCSS.MATH.CONTENT.K.CC.A.2: Count forward beginning from a given number within the known sequence (instead of having to begin at 1).
How Standard is Achieved: In Play Part 1, students will count forward beginning between numbers one to nine while coding the 123 Robot to move along the number line. Students will continue to use this process in Play Part 2 while working in small groups.
Common Core State Standards (CCSS)
CCSS.MATH.CONTENT.1.OA.C.5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
How Standard is Achieved: In Lab 1, students will be able to solve an addition problem by engaging in the “counting on spaces” strategy. Students will make the connection that one press on the robot correlates to one countable movement on the number line. They will explore how addition is exemplified by ascending on the number line. In Play Part 1, students will solve an addition problem using a number line as a whole class. In Play Part 2, students will use a number line to solve differing addition problems in small groups.
Computer Science Teaching Association (CSTA)
CSTA 1A-AP-08: Model daily processes by creating and following algorithms (sets of step-by-step instructions) to complete tasks.
How Standard is Achieved: In Play Part 1 and Play Part 2, students will practice using a set of steps in order to use the robot effectively as a tool to solve an addition equation on a number line. For example, students will put the robot down on the number line, make sure the robot is facing towards the higher number, press the button the correct amount of times to reach the sum, and shake the robot to reset once it has finished the addition equation.