5-PS1-3 Make observations and measurements to identify materials based on their properties.
Science - Grade 3-5
Taking "Burglar Alarm" as an open subject, the last project in this set of lessons guides students to complete engineering design tasks according to the NGSS standard steps. Just like engineers, students will find problems, set goals, design plans, build and test models, optimize and improve models, and finally complete the whole project.
Play and Learn with Boson Science Design Kit: https://www.dfrobot.com/product-2176.html
All the BOSON modules in the kit.
Activity 1 DEFINE ENGINEERING PROBLEMS
When sleeping at night, we may worry that thieves may come into the house and steal our valuables. Think about it, can we make a burglar alarm based on the engineering design method we learned before? When the thief steals valuables, the burglar alarm will make a sound!
Make a burglar alarm.
Activity 2 DEVELOPING POSSIBLE SOLUTIONS
After determining the engineering goals, let us follow the process of “Brainstorming-Drawing Prototype Diagram-What You Need-What You Do-Test and Evaluate” to develop a solution and complete the building of the burglar alarm.
Let’s first brainstorm how to build a burglar alarm. In the process, try drawing a prototype for it.
If you don't have ideas for this project, you might as well look for the project inspiration in the appendix!
In the brainstorming, we have initially understood the function and structure of the burglar alarm. Try drawing a prototype diagram. In the production process, it will be an important reference.
List the materials you need in the table below.
Record your steps in the table below.
Do you think the burglar alarm can be optimized? Try proposing an optimization plan to improve the efficiency of the burglar alarm.
In this project, we set up an open subject so everyone can make their burglar alarm.
The project is going to an end, please remove cables and put all the BOSON modules back into the kit according to the corresponding position.
Place valuables on the button to keep it pressed. When the thief removes the item, the button will be released and the buzzer will make a sound.
Change the buzzer in the previous project to a fan to make an alarm sound. For example, fix small iron nails on the tip of the fan blade and place a can next to it. When the fan rotates, they will hit the can to make an alarm sound.
Lock valuables in a closed and dark box. When the thief opens the box, the light sensor senses that the light becomes stronger, which can trigger the buzzer.