How Many Will There Be? Stairs

🔓 This is an unlocked sample! Byrdseed.TV is open for new memberships through April 30th, 2021. Join today!


Students will use the patterns they find in the first four steps to predict the 100th step.

Inspired by the website Visual Patterns.


  1. First, students count the squares in each step, search for three patterns, and predict Step 5.
  2. Next, they use their patterns to predict Step 10.
  3. Finally, students try to predict Step 100.
  4. We review the answer and I introduce two extensions: Triangular Numbers and Carl Friedrich Gauss.

Teachers love Byrdseed.TV!

"This was the best money I have ever spent on a teaching tool!"  ~  Christine in Wisconsin

"I love Byrdseed.TV. It is a lifesaver"  ~  Lori in Washington

"I am the coordinator for our district gifted program. Byrdseed.TV is one of my favorite sites and one of the best investments I have made for the program."  ~  Jeannette in California

Keep Watching

How Many Will There Be? →