Each lock at the top of the page will lead you to a series of problems to complete. When you have done the task correctly you will have a code to open one of the locks. You will need to type these codes in the Google form to the right. You will receive a message if it is the wrong code or it will turn green if it is correct. You can solve the locks in any order you wish.

Tips:

• Solve each lock as a team, recording your work carefully on paper in case you need to make corrections.

• Check the lock code as you go. Be careful to record each code on paper because if you navigate away from this page your answers will be deleted. Using a new browser tab for each lock is suggested.