What is the theme or topic to be presented?
Using muscle wire to mimic the action of applying electrical current to the severed legs of a frog by creating a circuit that moves a paper creation.
Students will be able to:
Create a circuit using muscle wire that simulates the movement created when an electrical impulse is sent through the muscles of a living thing.
Biology Standards, Year 11:
4.6 Carry out experiment on the impact of electric power to contraction in frog’s
femur muscles to explain the process of muscle contraction in human*
• Nervous system
• Electrical muscle stimulation
Ideas for Building Materials: (per student)
• 1 sheet of paper
• 40 cm of 0.006 in. HT Flexinol wire (a type of nitinol wire that contracts
• 2 crimp beads
• 1 9V battery
• 1 9V snap battery holder
• 15 cm of . in. copper foil tape
• thin wire (such as 29 AWG 392° F High-Flex Miniature Wire)
• scotch tape
• wire strippers or pliers
• soldering iron
This lesson requires basic understanding of circuits. If you have not reviewed circuits with your students please do so before beginning the lesson. The papercircuits activity found here is a great place to start: