Students used their crime kits to solve the mystery of the stolen whiteboards. Tomorrow they'll begin writing their own Sherlock Holmes story starring themselves as the detective and narrator.
The only clue left at the crime scene is a mysterious white powder. Students will analyze 6 different known powders, associated with 6 different suspects, to determine the identity of the whiteboard thief! This activity is modified for 8th grade, based on The Proof is in the Powder, originally designed for the International Exhibition of Sherlock Holmes. Students will finish their investigation tomorrow and complete this assignment by writing a crime report that is due Monday.
Gold Tape Question: Draw or use a computer to create a color diagram showing the "Four Sisters" that Mr. Keen describes in the Sacred Seeds video, with labels or captions that explain how each of the different plants helps the garden survive better together than they would on their own.
Today we continued our exploration of chemical and physical changes and started an 8 station lab conducting experiments about these concepts. We also watched the two videos below to continue adding to our background knowledge. We will complete the lab tomorrow, it you need another lab sheet you can download the file below.
In class students took copious notes about physical and chemical changes. If you missed class you can look through today's slides below. Also, we did demonstrations of different types of chemical changes. Video demonstrations of each of the types of reactions shown in class are in the playlist at the bottom of this post.
Gold Tape Question: Explain whether or not salt dissolving in water is a physical or chemical change.
Mr. Powell is a High School Science Teacher in Western Colorado.