1-What type of graph is used to show trends? 2-What type of graph is used to compare information?

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1 AGENDA ABSENT BLOCK 9/3 & 9/4 week-4 TOPIC: the NATURE of SCIENCE OBJ : 9, 10, 11 DO NOW: 1-What type of graph is used to show trends? 2-What type of graph is used to compare information? Science of Life EXT: 1.3 Skittles Graph DUE DATE: Friday 9/5 DW: Skittles Activity UNIT EXAM- FRIDAY 9/ Scenarios -Concept Map -WORKTIME: Skittles Graph HANDOUTS to PICK-UP: -Scientific Method Concept Map -Skittles Graph -Skittles Graph Rubric -Graphing Tips TURN IN to ABS box: SEMINAR 2: BEFORE/AFTER SCHOOL: DW-NONE EXIT: Fill in Level of Understanding/17 word Summary

2 UNIT OBJECTIVES 9- -IDENTIFY/SEQUENCE the flow of scientific method 10- -IDENTIFY & DIFFERENTIATE: - independent variable / dependent variable - experimental group / control group - prediction / hypothesis - conclusion / theory - qualitative data / quantitative data / constants 11- -DETERMINE / CONSTRUCT an appropriate graph for a given set of data Add on to each QUESTION every night as REVIEW!

3 BLOCK Write this in RED PEN LEVEL OF UNDERSTANDING NONE RED X in BOX DW GRADE: 2 1 0

4 Scenarios 1-Which people are in the control group? 2-What is the IV? 3-What is the DV? 4-What should Mr. Krab s conclusion be? 5-Why do you think 8 people in group B reported feeling better?

5 Scenarios 1-What is the initial observation? 2-What is the IV? 3-What is the DV? 4-What should Sponge Bob s conclusion be?

6 SCIENTIFIC METHOD is an organized plan OBSERVATIONS -information gathered thru senses QUESTIONS/PROBLEM -what you want to know HYPOTHESIS -proposed answer to problem/question EXPERIMENT -collect data / test hypothesis CONCLUSION -analyze data -decision / opinion formed following investigation THEORY -supported explanation -based on many observs /experimental results / over period of time

7 DATAinfo gained from observations Quantitative -numerical measurements (# s) -EX: -time -temp -length -mass -area -volume -density -MEAN /MEDIAN /MODE Qualitative -descriptions (WORDS) -interpreted differently -senses detect -EX: -see -hear -touch -taste

8 VARIABLESfactors in an experiment that CHANGE INDEPENDENT -the ONE FACTOR changed in a controlled experiment. -factor TESTED and affects the outcome of the experiment. DEPENDENT -factor BEING MEASURED in a controlled experiment. -value CHANGES because of changes to IV.

9 CONTROLLED EXPERIMENTinvestigation in a CONTROLLED setting CONTROL GROUP -used for comparison -not exposed to factor being tested EXPERIMENTAL GROUP -test group (what are you testing?) -exposed to factors being tested CONSTANTS -factors remain same for entire exp

10 1.3 DATA COLLECTION / GRAPHING PRACTICE GRAPHING is an important procedure used by scientist to DISPLAY the DATA that is COLLECTED during a CONTROLLED EXPERIMENT. 5 MAJOR PARTS -title -independent variable -dependent variable -scales for each variable -a key/ legend

11 #1 DETERMINE- type of graph

12 line graphs -show trends -change over time title Y-axis (DV) X-axis (IV) X-axis

13 Bar graphs -used to compare data from 2 or more items title Y-axis Let s Practice! X-axis

14 circle graph shows how the parts make up the whole use color/% title

15 #1 DETERMINE- type of graph X X X X X X X X

16 #2 LABELING axes

17 variables -something that changes INDEPENDENT variable -controlled by experimenter (I CONTROL) -EX: time (dates, min), depth (meter), temp (celsius) -X AXIS -horizontal DEPENDENT variable -directly affected by the IV -THE RESULTS -Y AXIS -vertical

18 #2 LABELING axes Bounce Height (cm) Distanced dropped (m) Candle burn time (s) Jar volume (ml)

19 #2 LABELING axes Bounce Height (cm) Distanced dropped (m) Candle burn time (s) Jar volume (ml)

20 #3 SCALING axes 75% graph

21 SCALES Where to plot points representing data? 1-Determine the variable range. - Subtract the lowest data value from the highest data value. - Do each variable separately. 2-Determine the scale of the graph -Determine a scale,(the numerical value for each square), that best fits the range of each variable. -Spread the graph to use MOST of the available space (75%)

22 #3 SCALING STEP

23 #3 SCALING STEP = 5.9 = 1.15 =.5

24 #3 SCALING STEP =24/7=3.42= =2.2/12=.18=

25 #4 CREATING titles

26 title -Your title should clearly tell what the graph is about -By reading title get an idea about the graph CONCISE STATEMENT placed above graph

27 #4 CREATING titles Distance vs. Ball height Ball height when dropped several distances above floor Jar Volume vs. Burn Time Burn time of candle with different jar volumes

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29 KEY/LEGEND LEGEND -short descriptive narrative concerning data -placed under graph KEY If more than one line/bar is drawn on a single graph, a "key" is provided near the title to identify the lines.

30 1.3 SKITTLES GRAPH DIRECTIONS: 1-Using your bag of Skittles and directions from your teacher, complete steps 2-5. COLLECT DATA: 2-SORT your bag of skittles by color and RECORD the data table showing the # of each color in your bag. 3-COLLECT data from your table partner s bag of skittles: RECORD in data table.

31 1.3 SKITTLES GRAPH GRAPHS: 4- Use the information from the data table ABOVE and construct a graph. [check the rubric for all needed areas] 5-Using the data provided BELOW, construct a graph to show the blood sugar levels of Mr. Smith over a period of an hour after eating a bag of Skittles. [check the rubric for all needed areas] blood samples were taken every 10 minutes for 1 hour milligrams per deciliter of blood (mg/dl) time in minutes

32 EXIT FILL-IN: level of understanding of today s objective 9- -IDENTIFY/SEQUENCE the flow of scientific method 10- -IDENTIFY & DIFFERENTIATE: - independent variable / dependent variable - experimental group / control group - prediction / hypothesis - conclusion / theory - qualitative data / quantitative data / constants 11- -DETERMINE / CONSTRUCT an appropriate graph for a given set of data