Our work today involved a Counting By Weighing activity. Students recorded the mass of a small number of objects to then estimate the mass of a much larger number of objects. The activity was designed to help students begin to make sense of the mole, a unit of chemistry that represents 6.02 x 10^23 of any given object. In chemistry, we use the mole as a way to measure the number of atoms or molecules. Students also received a copy of the Chapter 13/14 Study Guide as a tool to begin preparing for the quiz next Tuesday.

Notes from the whiteboard:

**Homework:**

- Read Lesson 75 in the textbook. Login via hs.saplinglearning.com and enter your username and password:
- Username: wahps****s-####### (**** = first 4 letters of your last name and ####### = student number). Remember to include the dash between s and #.
- Password: S-####### (the S must be capitalized)

- Work through the practice problems at the end of Lesson 75.
- Please ask questions about anything from Lesson 75 you do not yet fully understand.

**Opportunities For Help Outside of Class:**

- Mr. Swart’s office hours: Mondays, Tuesdays, and Thursdays after school until at least 3:00 (later with advanced notice)
- Use the vast number of resources available on this website – check each lesson!
- Email Mr. Swart for help if staying after school is not possible
- Form a study group with other students to review concepts from class
- Attend MASH after school (M/T/Th in Library)
- Attend Math Lab after school (T/Th in Room 124)

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