Using the Slide Deck (Appendix A):
- Using the introductory slides (Appendix A), show students the concept of the Transformation Machine: there is an input that goes through a transformation to produce an output. Explain to students that a transformation can include any change made to the input card.
- Have students brainstorm a list of potential changes that might be made to an input. Students might say that the input shape could be rotated, flipped, a mirror reflection, etc.
- Go through the first five examples on the slides with the students. Have them observe the input image with its corresponding output image and guess the transformation rule.
- After hearing several guesses, write the correct and specific rule for each of the examples included for students to confirm their guesses.
- Go through the next two examples on the slides, taking the time to explain the table that displays the paired inputs and outputs. Ask students to observe the table and share what they notice about the inputs and outputs.
- Students should notice that all the inputs and outputs follow the same transformation rule.
- Have several students guess the rule and then share the correct transformation rule.
- Have students check their understanding of the last two examples in the slide deck. When having students predict the outputs of shapes based on the transformation rule, ask them to first visualize in their mind’s eye – encourage students to close their eyes and mentally take the input and transform it according to the observed rule – and then share the output.
Using the physical Transformer Machine:
- Introduce students to the physical Transformer Machine. Present students with an input card and insert it into the Transformer Machine through the input slot (Figure 2). Take the corresponding output card and withdraw it through the Machine’s output slot (Figure 3).