Tag Archives: investigation

Tuesday March 29, 2016

Learning Goal: I am learning to

  •  define exponential decay and decay factor
  • identify that exponential functions can be represented by the general equation y=ab∧x and identify what the “a” “b” and “x” represent
  • determine whether an equation is an exponential relation
  • represent exponential decay through a table, equation, and graph

Take up: Botany example (PG 155 #6)

n190_w1150Creative Commons License Biodiversity Heritage Library via Compfight

We will investigate what an exponential decay relation looks like. You will each get 100 coins in your small groups. Use the instructions on PG 157 in your text. Make notes as you perform this investigation. We will use this as a basis for our notes on exponential decay.

Once we have looked at your results and summarized our findings, compare this to our work last day. How are exponential growth and exponential decay related?

We will try a few problems together, then in your groups you will practice.

Your independent practice can be found on PG 159-160 #1-4, 6

Wednesday March 23, 2016

The folding paper myth

How many times can you fold a piece of paper? There is a story going around that says you can only fold a piece of paper up to 7 times. Let’s see if this holds true…

We are going to investigate this ourselves today! You will need a textbook and graph paper. Complete the investigation on PG 151. Discuss with your partner the “Reflect” questions – record in your notes the big ideas from the discussion.

We will use this investigation and ideas from it to summarize and make notes about what we have learned.

You will work on some practice from the text PG 155 #6, PG 153-155 #1-4.

Your exit slip for today is to answer the “In Your Own Words” on PG 155 and submit to the class bin.