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Mystery Science

Mystery Science (K-Grade 5) contains hands-on, low-prep, easy-to-use activities to engage students in learning the "doing" of science and engineering. There are three levels for families to choose from:

  • Mini-Lessons are for families on the go looking for quick lessons. (5-15 minutes per week)
  • Core Lessons are for families who enjoy hands-on science learning. (40-60 minutes per week)
  • Anchor Layer is for families who want to dive deep and thoroughly explore science topics (60-120 minutes per week).

This subscription is not available to HCOS Registered students.

Logging In

First, select which mysteries you want to use by visiting the Mystery Science Lessons by Grade Level spreadsheet. The previous link also contains the titles of the "Mini-Mysteries" which are about five minutes long. You may also find it useful to select your mysteries from the Mystery Science Year Plan. Once you have selected your lessons, email your support teacher with the lesson names to receive a student link.

Navigation & Use

For information about getting started, visit the Mystery Science – Getting Started hub.

Mystery Doug is a weekly video series from the creators of Mystery Science that inspires students to ask questions! It’s the perfect five-minute break for morning meetings, snack time, or any transitions in your day. Mystery Doug can also be found on YouTube.

Purchasing Access to Mystery Science

Families can sign up for a paid account through the HCOS purchasing department at a cost of $99.00 USD. Mystery Science offers discounts on homeschool memberships during their early April and August sales of about $69.00 USD. 

If parents purchase an account in Mystery Science and their teacher sends them a link, it will not open if the parent is signed in to their purchased account. Parents will need to sign out and clear their browser cache before clicking the link sent by the teacher. Parents do not need to log in to be able to open the link.