SPIKE™ Prime Set

# Keep it really safe!

Use compound conditions to reinforce the encryption pattern on a safe-deposit box.

90-120 min.
Intermed.

## Lesson plan

1. Prepare

• Read through the student material in the LEGO® Education SPIKE App.

Engage (5 Min.)

• Use the ideas in the Ignite a Discussion section below to engage your students in a discussion related to this lesson.
• Use the video to explain the lesson.

Explore (20 Min.)

• Have your students work in pairs to build the super-safe-deposit box.
• Ask them to play the program to see how the lock works.

Explain (5 Min.)

• Facilitate a discussion about how and when to use "AND" and "OR" in compound conditionals

Elaborate (15 Min.)

• Ask your students to make their super-safe-deposit boxes even more secure by adding compound conditionals to their programs.
• Don't forget to leave some time for cleanup.

6. Evaluate

• Give feedback on each student's performance.
• You can use the assessment rubrics provided to simplify the process.

## Ignite a Discussion

Start a discussion about iteration or fixing things by asking relevant questions, like:

• How can you evaluate the strength of a password?
• What's a compound condition?

Have your students watch this video to see what they're about to do.

## Building Tips

Tandem Build
Split each team's building tasks to ensure that everybody is actively involved:

• Student A: Super-Safe box
• Student B: Super-Safe box

Align Motors Correctly
Make sure the arm is raised when you start the program.

Manual Unlock
This model has a manual key to unlock the door if needed.

## Coding Tips

Main Program

Possible Solution

Other Programs

## Differentiation

Simplify this lesson by:

• Programming just one compound condition

Take this lesson to the next level by:

• Having your students add more sensors (e.g., Distance Sensor, Force Sensor) to their models to create other compound conditions
• Having each team challenge another team to unlock their super-safe-deposit box
• Asking your students to use the NOT function when defining their conditions

## Assessment Opportunities

Teacher Observation Checklist
Create a scale that matches your needs, for example:

1. Partially accomplished
2. Fully accomplished
3. Overachieved

Use the following success criteria to evaluate your students' progress:

• Students understand what a compound condition is.
• Students are able to use compound conditions in their program.
• Students can discuss digital security in detail and with precision.

Self-Assessment

Have each student choose the brick that they feel best represents their performance.

• Blue: I've used one compound condition in my program
• Yellow: I've used two compound conditions in my program.
• Violet: I've used more than two compound conditions to create a super safe program!

Peer-Assessment
Encourage your pupils to provide feedback to one another by:

• Having one pupil use the coloured brick scale above to score another pupil’s performance
• Asking them to present constructive feedback to one another so that they can improve their group’s performance during the next lesson

## Language Arts Extension

To incorporate language arts skills development:

• Have your students explore the meaning of digital security terminology, like:

▷ Boolean
▷ Conditions
▷ Compound Conditions
▷ AND, OR, NOR, NOT
▷ Encryption
▷ Case sensitive

Note: This will make for a longer lesson.

Students who enjoyed this lesson might be interested in exploring these careers pathways:

• Information Technology (Computer Programming)
• Information Technology (IT Applications)
• Information Technology (Oracle / Database Programming)
• Information Technology (Web Design)

## Teacher Support

Students will:

• Explore compound conditional programming

LEGO® Education SPIKE Prime Set

Australian Curriculum: Technologies
ACTDIP027
Define and decompose real-world problems taking into account functional requirements and economic, environmental, social, technical and usability constraints
ACTDIP029
Design algorithms represented diagrammatically and in English, and trace algorithms to predict output for a given input and to identify errors
ACTDIP030
Implement and modify programs with user interfaces involving branching, iteration and functions in a general-purpose programming language
ACTDIP031
Evaluate how student solutions and existing information systems meet needs, are innovative, and take account of future risks and sustainability

## Pupil Material

### Student Worksheet

Download, view or share as an online HTML page or a printable PDF.