About Who Took Fluffy?™

The Activity

Who Took Fluffy?™ is a Who-Done-It mystery for grades 3–6 that introduces students to science concepts through a Problem Based Learning (PBL) approach.

The problem is simple: determine Who Took Fluffy?™ (Fluffy is a rabbit who is the class mascot in Ms. Donroe’s classroom).

To achieve that determination, students learn concepts that help form the basis for all science learning such as pattern recognition, cause and effect and evidence-based conclusions.

Jay Elementary, where Fluffy went missing

The Case

One morning, the students in Ms. Donroe’s class at Jay Elementary School arrived to find their class mascot, Fluffy the rabbit, missing from his hutch! Everyone was upset: this was their pet rabbit, the snow-white adorable little cutie they all named Fluffy!

“Use science and logical reasoning,” Ms. Donroe told her students, “In order to solve this mystery and find Fluffy.”

In conducting the Who Took Fluffy?™ science lab activity, students learn science as they find clues in the classroom, analyze them in the lab, conduct “interviews” with the people associated with the case and, ultimately, make their determination as to Who Took Fluffy?™

Who Took Fluffy?™ is available as both a virtual and a real-world science lab activity. Each can be used separately or in combination making it a “blended” learning activity. This provides the best of both the virtual and the real worlds for teachers and students in a richly rewarding and flexible educational experience.

Who did it?
Fluffy behind a door
Where could Fluffy be?

Schedule a Demo

Request an appointment with a representative who will walk you through Who Took Fluffy?™ and answer your questions. This no-obligation demo normally lasts 15-30 minutes and is conducted using online tools such as Skype or Google Hangouts to chat and share our screen with you.

Schedule a Demo

The Who Took Fluffy?™ Online Activity

The Who Took Fluffy?™ online activity provides seven lessons and five lab activities for students grade 3–6. This fun science mystery activity is problem-based learning (PBL) that compels the application of science and is aligned with grade-appropriate NGSS standards. This is an online activity that students access via a web browser on any device connected to the internet including desktops, laptops, tablets, Chromebooks or smartphones.

For grades 3–6.

The Who Took Fluffy?™ online activity includes:

  • A fun mystery story with friendly cartoon characters
  • Video game-like 3D exploration of the classroom scene
  • High quality, graphically rich lessons
  • Multiple choice quizzes that are automatically graded
  • Virtual labs in which students examine the control samples and evidence and note their characteristics
  • A guided narrative to help students draw conclusions
  • “Ask the Teacher” function which answers student questions and provides helpful hints
  • Dashboard to track student's progress

The Who Took Fluffy?™ online activity provides four possible scenarios that the teacher can choose via the teacher’s online Lesson Plan function.

Learn more about the technical requirements for WhoTookFluffy.com below.

Purchase Who Took Fluffy?™ Online Activity


The Who Took Fluffy?™ Online Activity is also available to purchase from:

Carolina Biological

What Software Do I Need to Use Who Took Fluffy?™ Online?

Who Took Fluffy?™ uses the latest web technologies in order to deliver a rich, interactive experience right in your web browser. No other software downloads or plugins like Flash are needed. Older web browsers often lack the ability to use these new technologies or they may perform poorly or not work at all. This means that WhoTookFluffy.com requires you to use a modern and up-to-date browser.

If you are not currently using a supported browser you can either upgrade your current browser or install a new one. Upgrading or installing a browser is free, easy, and safe.

The following list represent browsers that will work with WhoTookFluffy.com:

While Who Took Fluffy?™ may work in older versions of these browsers, the most recent versions will usually offer improved performance and security.

Who Took Fluffy?™ Online and the Web Content Accessibility Guidelines

Our goal at Learn Engines is to make our products accessible to the broadest range of users possible. To that end, we continually work to update Who Took Fluffy?™ and our other products to better comply with evolving accessibility standards on the web.

If you are having problems using Who Took Fluffy?™ or have noticed specific accessibility problems, please contact us using our contact form.

See the table below to learn how Who Took Fluffy?™ complies the WCAG 2.1 standards.

Who Took Fluffy?™ WCAG 2.1 Conformance Matrix

Coming Soon

The Who Took Fluffy?™ Real World Kit

The Who Took Fluffy?™ kit includes everything the teacher and students need to conduct six Lessons and five Lab Activities:

  1. Lesson 1: The Story
  2. Lesson and Lab 2: Blood Typing
  3. Lesson and Lab 3: Hair Analysis
  4. Lesson and Lab 4: Fingerprint Analysis
  5. Lesson and Lab 5: Footprint Impression
  6. Lesson and Lab 6: Fiber Analysis

Students can work individually or in groups.

The Teacher and Student Booklets included provide lessons and step-by-step procedures for conducting the labs. These booklets also present the story and the characters involved in a fun, graphically rich style.

The booklets also include the floor plan map of the classroom scene, an important tool they will use to solve the case. Here students map where evidence was found and, after it has been analyzed in the lab, determine to whom the evidence belongs.

The kit is shipped in a sturdy, clear plastic tote for safe storage and easy access. Each of the lab activities are packed in their own heavy-duty reclosable poly storage bag.

Get the Who Took Fluffy?™ Real World Kit


The Who Took Fluffy?™ Real World Kit is also available to purchase from:

Carolina Biological

The Who Took Fluffy?™ kit comes in a convenient tote
Materials from the fiber analysis lab