Rel04162012 Classroom Robotics – Mathematics Day 8- Pg. 1
Classroom Robotics – Mathematics Day 8
Overview
Students will again be exploring graphing. They will be approaching the understanding of graphing from four directions, creating graphs from data, interpreting graphs that are drawn for the students, creating rough graphs from prior knowledge, and recreating graphs with sensors.
Learning Objectives:
Student’s will be able to…
· Create graphs using the ultrasonic sensor
· Interpret distance vs. time graphs
Suitable Ages: 11+
Time Needed: 1 hr 15 min
In this packet
Teacher’s Guide
Graphing Worksheet
Graphing Worksheet Answers
Color Sheet
TEACHER’S GUIDE
Activity Goal
Students will again be exploring graphing. They will be approaching the understanding of graphing from four directions, creating graphs from data, interpreting graphs that are drawn for the students, creating rough graphs from prior knowledge, and recreating graphs with sensors.
Objectives
Student’s will be able to…
· Create graphs using the ultrasonic sensor
· Interpret distance vs. time graphs
Materials
Rel04162012 Classroom Robotics – Mathematics Day 8- Pg. 1
· Copies of graphing worksheet
· Copies of Color Sheets
· LEGO kits
· Computers with data logging software
Rel04162012 Classroom Robotics – Mathematics Day 8- Pg. 1
Set Up
Familiarize yourself with the lesson plan, and copy any handouts. You might consider laminating the color sheet copies so that you do not have to copy them every year.
Time
/Action
/Materials Needed
10 min / 1. Explain how to do on-board datalogging using the view function and allow students to test it out with various sensors. / LEGO kits
Computers
10 min / 2. Explain how to do real time data logging with the robot tethered to the computer and allow the students to test it out with various sensors. (Exercise 40 is an example of this). / LEGO kits
Computers
15 min / 3. Walk the students through how to interpret the graphs created by the datalogging software. / LEGO kits
Computers
15 min / 4. Explain how to program the robot to gather data. (Exercise 43 is an example of this). / LEGO kits
Computers
20 min / 5. Pass out color sheets and worksheets and have students work on the Graphing Worksheet. / Graphing Worksheet
Color Sheets
5 min / 6. Go over the Graphing Worksheet Answers. / Graphing Worksheet Answers
<75 minutes / We encourage and welcome your feedback!
Please send any feedback about your experience and observations and forward it to <NETID>@utdallas.edu at the Science and Engineering Education Center.
Procedure
Graphing Worksheet
Name______Class ______
Explain what is happening in the graph 1 above?
What is happening in graph 2 above?
Use your ultrasonic sensor to draw the above graphs, and each of the following. When you have drawn a graph that is close to the printed ones show it to the teacher or TA and they will put their initials below.
1. Graph 1 ______
2. Graph 2 ______
3. Graph 3 ______
4. Graph 4 ______
Program the robot to log the colors on the Color Tiles sheet. Download the graph. Draw it below and label the data of the different color tiles. Be sure to label the graph.
Why does the graph look this way?
What does the sensor see if not color?
How can you use the sensors to help you prepare for the team competition?
Graphing Worksheet Answers
Time
Explain what is happening in the graph 1 above?
The sensor is moving toward the wall or object and is slowing down, decelerating in the process.
What is happening in graph 2 above?
The sensor is sitting at 10 cm from the wall. The sensor is then moved away from the wall until it reaches 30 cm. then it stops.
Use your ultrasonic sensor to draw the above graphs, and each of the following. When you have drawn a graph that is close to the printed ones show it to the teacher or TA and they will put their initials below.
5. Graph 1 ______
6. Graph 2 ______
7. Graph 3 ______
8. Graph 4 ______
Sensor starts close to the wall, moves away from the wall and then returns to the wall
The sensor moves closer and closer to the wall in 4 steps.
Program the robot to log the colors on the Color Tiles sheet. Download the graph. Draw it below and label the data of the different color tiles. Be sure to label the graph.
Why does the graph look this way?
The dark colors will absorb more light than the light colors. The different colors will not look very different to the light sensor.
What does the sensor see if not color?
The sensor sees the amount of red light reflected back to the light sensor. Dark pigments no matter what color are going to look dark to the sensor.
How can you use the sensors to help you prepare for the team competition?
This skill should help them prepare for the competition as well. By graphing the data from their sensors as the robot moves around the field they should be able to use the data points to program their robots.