Analysing a Child's Hole Punch An introduction to: The Input – Output Model (Systems). Schematic assembly of a simple paper punch. Analysis of a Child’s Hole Punch. Evaluation. Introduction to Session: Explain the goals of the session An introduction to 4 aspects to technology Analyzing a technical problem Creating a technical object/tool Creating simple technical diagrams Analyzing a technical object The activity is a simple activity, suitable for early in the cycle.

1) The Input – Output Model (Systems). Analysing a Child's Hole Punch An Introduction to: 1) The Input – Output Model (Systems). Often we are faced with a situation where we may need to create an object or tool to solve the problem. Before we begin to design or create the tool we need to understand exactly what is being asked, what is expected. Two different scenarios will be presented – teachers can select the scenario that best fits with how they which to correlate the activity with the science concepts they plan to teach. Science/Technology Implementation Committee

Systemic Analysis Science/Technology Implementation Committee

Animate this in parts for they follow sequence. Science/Technology Implementation Committee

A Simple Paper Punch Science/Technology Implementation Committee

Simple Punch in Action Participants are asked to observe closely as the process is repeated. How would you describe the process? Science/Technology Implementation Committee

Simple Punch in Action Science/Technology Implementation Committee

Simple Punch in Action Science/Technology Implementation Committee

Simple Punch in Action Participants are asked to observe closely as the process is repeated. How would you describe the process? Science/Technology Implementation Committee

Simple Punch in Action Science/Technology Implementation Committee

Simple Punch in Action Science/Technology Implementation Committee

Simple Punch in Action Participants are asked to observe closely as the process is repeated. How would you describe the process? Science/Technology Implementation Committee

Simple Punch in Action Science/Technology Implementation Committee

Simple Punch in Action Science/Technology Implementation Committee

The Input - Output Model Participants work on paper copy of slide. Group discussion follows. Science/Technology Implementation Committee

The Input - Output Model Participants work on paper copy of slide. Group discussion follows. Science/Technology Implementation Committee

Systemic Analysis Sheet without hole Function: To make a hole in a thin sheet of relatively flexible material Hole punch Correct amount of paper, properly placed Operator present Device and paper in position Paper disks Sheet with hole (value added ) Muscular energy Consistent with dishwasher example. More formalized SADT Model. Science/Technology Implementation Committee

2) Schematic assembly of a simple paper punch. Punch knife Finger rest Draw a cross-section of the hole punch using the symbols provided. spring Show these slides as a possible classroom activities to see if students can read technical drawings. (Slides 15 – 20) Just discuss – available to use with students. casing crimp Science/Technology Implementation Committee

What do you think? How are the punch knife and finger rest attached? Why is the finger rest rounded? Why is the tip of the punch knife rounded? Test with paper if necessary What purpose does this part of the casing serve? What is the spring for? DIAGRAM F (finger) What is the shoulder for? How does the punch knife move? Show these slides as a possible classroom activities to see if students can read technical drawings. Discuss role of each part. Science/Technology Implementation Committee

In what sequence was the paper punch assembled? Assembly Sequence? In what sequence was the paper punch assembled? Show these slides as a possible classroom activities to see if students can read technical drawings. Science/Technology Implementation Committee

2) Schematic assembly of a simple paper punch. Draw a cross-section of the hole punch using the symbols provided. This is animated. Show these slides as a possible classroom activities to see if students can read technical drawings. (Slides 15 – 20) Science/Technology Implementation Committee

TIME TO WORK ON ASSEMBLY OF THE PUNCH USING THE SYMBOLS PROVIDED!

Assembly Sequence ASSEMBLY SEQUENCE The punch knife is inserted through the hole in the bottom of the housing up to the shoulder. The spring is then placed on the top. Next, the finger rest is placed on top of the punch knife, compressing the spring slightly. Through crimping (flattening), the finger rest is permanently linked to the punch knife, fastening all the parts together. 1 1 2 3 Crimping 4 2 Assembly sequence description. Type of description that students could be asked to write. Show these slides as a possible classroom activities to see if students can read technical drawings. 3 4 Science/Technology Implementation Committee

Which can be easily built? Which will work? Why? Why not? Show these slides as a possible classroom activities to see if students can read technical drawings. Which can be easily built? Explain why Science/Technology Implementation Committee

Use the sheet provided and decide which assemblies work and which don’t! Explain why!

Some do - Some don't. Show these slides as a possible classroom activities to see if students can read technical drawings. Ask participants to explain which ones work and which don’t. Which would be hard to assemble, or not. Animated to have each one appear on press.

3) Analysis of a Child’s Hole Punch. Examine the child’s hole punch and take it apart, noting the different parts and the function of each. You will be asked to draw a simple technical diagram to represent the punch. Science/Technology Implementation Committee

Complete and label the technical diagram.

Final Design Plan Rotational Motion Science/Technology Implementation Committee

Homework Read 389-391, do Q 1&2