Six Holes of Arachnipod Crossing

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In this Cyberchase activity, learners use the numbers one through six to solve a puzzle. Learners are challenged to arrange spiders, numbered one through six, on a triangle so that each side of the triangle adds up to nine. This puzzle was featured in "The Hacker's Challenge" episode. During this episode the CyberSquad had to solve the puzzle to get through the Arachnipod Crossing. Learners can also use the blank spiders to make a new puzzle. [Activity is publicly available through a web crawler capture on]

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
10 to 30 minutes

Estimated Materials Cost:
1 cent - $1 per student

Age Range:
Ages 6 - 11

Resource Type:


Materials List (per student)


  • Mathematics
    • Number and Operations
      • Number Systems
      • Operations
  • The Nature of Technology
    • The Design Process
      • Problem Solving

Informal Categories

  • Animals


To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


This resource is part of:

Access Rights:

  • Free access



  • All rights reserved, THIRTEEN, 2011

Funding Sources:

  • National Science Foundation
  • Northrop Grumman Corporation
  • Ernst & Young LLP
  • PBS
  • Corporation for Public Broadcasting
  • The Volckhausen Family