Each week we release a new mini-lesson which is available for that week to everyone with a Mystery Science account. Your free trial gives you access to the two most current mini-lessons. To unlock the archive and access prior mini-lessons, you’ll either need a paid Mystery Science membership or you can invite 5 friends to join Mystery Science.
To invite friends, click on your name in the top right corner of your Mystery Science homepage. You will see a drop-down menu. Click the "Share with friends" option, and a pop-up window will appear. There, you can share Mystery Science with friends and colleagues.