Lesson 12: Traversals Make

For the past few days, we've learned a lot about using traversals to make apps that manipulate large amounts of information. In today's Make Project you'll be practicing processing lists and using programming patterns with traversals to create a functioning Random Forecaster app.

Short Intro: The Warm Up today is short and light. Students should spend the maximum amount of time working on their projects.

Group: Make a determination as to whether this project will be completed in pairs or individually. You may even choose to let students decide.

Do This: Have students explore the working Random Forecaster app in Level 1.

Discuss: If students are not working in pairs they should still discuss the prompts with a neighbor.

• What information is needed to create this app?
• What list filtering patterns might be used?

Discussion Goal:

• What information is needed to create this app?
  • The weather forecast for tomorrow for random cities, including the weather condition, high and low temperatures, and a weather icon.
• What list filtering patterns might be used?
  • The List Filter Pattern: Filtering Multiple Lists is used.

Adapting Make Lessons - You may decide that you'd like to have your students write the code for a modified or entirely different app using the same skills. This might help you differentiate your instruction or provide you with a way to reassess students. Check out the Customize Make Lessons: How-To-Guide for guidance on how to get started with this.

Now let's build this app. The screen has been set up for you - it's your job to add the code!

Do This: Direct students to level three where they complete the Random Forecaster app. An optional Activity Guide is provided if students would like guidance in creating the app. The most relevant programming pattern is displayed on a slide. Review this pattern quickly with students, if needed.

Submit: Encourage students to check the rubric on the last page of the Activity Guide before submitting.

Supporting Students: While students are working on their apps, circulate the room and check in with students who need a little help. Encourage students to collaborate and discuss bugs with each other.

Debugging: Review with students steps they can use to debug if they get stuck:

• Run the code on turtle mode
• Add the variables to the watcher
• Explain the code to a friend

Great work on your Random Forecaster app today. Before wrapping up, we will practice writing for the style of questions that are asked as part of the Create performance task on the AP exam. Respond to the question in Step 5 in your activity guide, and submit it along with your project.

Do This: Complete the written response in Step 5 of the Activity Guide.

Each student, in every classroom, will come to the written response with a different level of comfort, ability, and familiarity with writing for these style of questions. As such, consider offering one or more of the following supports:

Writing Support: Provide students with these sentence starters for guiding their response.

App Interface Support: For students who did not fully complete their app, provide them with this snippet from the exemplar code.

Use the rubric provided with the project to assess student projects.

Student responses can be used as a formative assessment to evaluate their understanding of connections between user interface features and functionality. Review their explanations for clarity, accuracy, and alignment with the AP exam’s expectations. The provided rubric can be used to guide this review, and to help provide students with feedback to guide their learning and improvement.