Challenge your creativity to build an obstacle course for a marble to run for at least twenty seconds. 
Explore the wide variety of materials and tools you have at your disposal.
Sketch, design and build a marble run with at least four turns.
Experiment with different textures to make use of friction.
Here's a challenge you can't resist!

Gather these materials before you get started!

• Cardboard tubes (6 inch) - 8 nos.
• Electrical Casing (6 to 12 inch) - 8 nos.
• Plastic Elbows - 2 nos.
• Flexi pipe (6 to 12 inch) - 3 nos.
• Coloured Popsicle sticks - 1 pack.
• Dowel sticks - 30 nos.
• Bubble Wrap (6 inch by 1 inch) - 2 nos.
• Emery paper or Abrasive paper - Heavy Grit - 1 sheet.
• PVC pipes - 4 nos.
• A4 sized corrugated cardboard roll - 2 nos.
• Corrugated cardboard sheet - 2 nos.
• A4 sized coloured construction paper - 2 nos.
• Hardboard (2 ft by 4 ft) - 1 no.
• Toothpaste carton
• Insulation foam
• Glass marbles (20 mm diameter) - 6 nos.
• Skewer sticks - 15 nos.

Stay curious and keep skilling with Ulipsu!