Slope: Parallel, Perpendicular, or Neither?

Google Slides Drag-and-Drop Secret Number Challenge

Engage students in using slope to classify linear functions as parallel, perpendicular, or neither with this interactive Google Slides activity!

Students analyze graphs, given slopes, and sets of ordered pairs to compare slopes and classify linear functions while uncovering a Secret Number through a fun drag-and-drop challenge.

🔍 How the Secret Number Challenge Works

• Students complete three problem sets (15 pairs of linear functions per set):
• Set 1: 15 graphs
• Set 2: 15 pairs of slopes
• Set 3: 15 pairs of ordered-pair sets
• Each pair of linear functions has an assigned number.
• Students drag and drop each system into a sorting table labeled:
• Parallel
• Perpendicular
• Neither
• Each category contains exactly 5 systems, providing a built-in self-check.
• Students add the assigned numbers within each category, combine the totals across all three problem sets, and use a final equation to reveal the Secret Number.

🎯 Skills Practiced:

Students determine whether two linear functions are parallel, perpendicular, or neither by comparing slopes when given:

• A graph of two linear functions
• A pair of slopes
• Two sets of ordered pairs
  

✨ What’s Included

• Fully editable Google Slides file
• Student Instructions Slide: Clear, student-friendly directions explaining the sorting task and how to find the Secret Number
• 3 Drag-and-Drop Problem Sets (45 Pairs of Linear Functions Total):
• 15 graphs
• 15 pairs of slopes
• 15 boxes with two sets of ordered pairs
• Sorting tables with rows labeled Parallel, Perpendicular, or Neither.
• Calculate the Secret Number Slide: Step-by-step directions for combining totals and finding the final answer
• Editable Answer Key: Fully editable and not locked, allowing teachers to customize or modify as needed

⚡ Features at a Glance

✅ Interactive Google Slides Activity – No prep and perfect for digital classrooms

✅ Drag-and-Drop Sorting – Keeps students actively engaged

✅ Built-In Self-Checking – Each category has exactly 5 items when sorted correctly

✅ Game-Based Motivation – Students stay focused as they race to find the Secret Number

✅ 45 Total Slope Comparisons – Plenty of rigorous, standards-aligned practice

✅ Fully Editable Answer Key – Easy to adjust or extend

No prep. No stress. Just meaningful practice and engaged students.