studies properties of materials

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Presentation transcript:

studies properties of materials LEARNING TARGET: I can analyze comparison data of materials, use supporting evidence to argue the ‘best choice’ material and discuss trade-offs. Oct 10 / 11 Act B12 Evaluating Materials CHALLENGE Q Which is the best material for making a drink container? VOCAB: material materials scientist materials engineer type of matter/stuff studies properties of materials how to use materials

DISCUSSION Which of three materials - aluminum, glass or plastic – would make the best drink container? Read B3-4 2. What are properties that help you make best choice of material? (student talk) breakability / safety cost convenience (reclose-able cap) recyclability density / weight

PROC AND DATA MATERIALS: PROCEDURE: Read B-5 and summarize DATA: WS 12.1 (activity) *Cal vs cal vs kcal video – 3 mins

Groups Organize cards into Categories (activity) Debrief (possible Categories): aluminum – glass – plastic cost to produce % recycled containers per ton kcal of energy to make one ton % of solid waste * "Story of" video – 8 mins MAKE GRAPHS Each student in group make different graph Compare graphs /debrief (next slide)

Graphing Data on Aluminum, Plastic and Glass containers per ton of material percent recycled container type as percentage of solid waste cost to produce container kcal (kilocalories) of energy to make one ton pollutants and waste created in producing one ton

DISCUSS & WRITE: How did the graphs change your decision on drink container material chosen? ANALYSIS: B6 Q1 Q2 two best aspects for choice: depends on "needs" (recycling and cost?) more information needed?: consumer choice, wastes from making, how more environmentally friendly, etc.

CER Q5 *started end of class if extra time ANS CHALLENGE Q Which is the best material for making a drink container? A: depends on the situation and needs / priorities HOMEWORK 1. READ CAREFULLY - Life Cycle on B8 - 11 (next class) 2. CER (10pts, next class)