Teachers may adapt the activities for their own classrooms by editing the Padlet prompts, adjusting the difficulty of the triangle problems, or substituting different digital tools.

(Sometimes you'll see a Teacher Note in italics. Be sure to delete this before posting this padlet for students)

1. Complete the Edpuzzle listed above

(Teacher Note: Replace the link above with one to an assigned version for your class by clicking the "assign" button at the top. Be sure to delete this text afterwards.)

2. Find or create two triangles (in images, drawings, or real-life photos). Post them as a reply to this with a short explanation of which congruence postulate could prove them congruent. Comment on another student's post that doesn't yet have a comment on if you agree/disagree with them and why.

1. Begin by reviewing one or two edpuzzle questions from the previous activity as a class.

2. Place students into breakout groups (3–4 per group).

3. Share a collaborative whiteboard (Whiteboard.chat) with each group.

4. Each group is given a set of triangle diagrams. Their task is to:

   • Mark corresponding sides/angles.

   • Identify the correct congruence postulate (SSS, SAS, ASA, AAS, or HL).

   • Write a short proof or justification directly on the whiteboard.

5. Return to the main room where groups present their whiteboard solutions in 1–2 minutes.

Teacher Note: Whiteboard links should be set up before class and shared in the chat. Monitor breakout rooms to provide guidance as groups work.

• Formative Assessment

  • Review Padlet posts and comments for accuracy and clarity.

  • Check if students correctly identify and justify triangle congruence postulates.

  • Provide quick feedback on misconceptions during the synchronous whiteboard activity.

• Summative Assessment

  • Assign short Quizizz (Linked Above)

  • Results provide data for both teacher and student to confirm mastery of objectives.

Teacher Note: Share the quiz link at the end of the synchronous session or post it to your districts LMS as a required follow-up assignment.

• Padlet Guidelines

  • Require students to post with their name attached.

  • Approve posts before they appear (optional moderation).

  • Remind students to give constructive feedback: agree/disagree and explain why.

• Synchronous Session Norms

  • Keep microphones muted unless speaking.

  • Assign roles in breakout groups (e.g., speaker, recorder, proof-checker).

  • Use chat for quick questions without interrupting.

• Participation Rubric (suggested)

  • 2 points: Accurate Padlet post with congruence justification.

  • 2 points: Two constructive comments on peers’ posts.

  • 1 point: Active participation in whiteboard breakout activity.

Teacher Note: Share these rules with students before starting the module and model what a constructive Padlet comment looks like.