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Evaluation of Laboratory Science CoursesName of course:Human ScienceDuration of study:SemesterTextbook title and copyright date:In house textbook created from open resources.Approximately how many hours per week do students spend conducating hands-on l aboratoryexperiments i n this course?1 hour (20% of instructional time)Please provide a l ist of the l aboratory experiments or projects you do that require manipulationof equipment.Tissues LabMuscle Contraction LabHeart Rate LabReaction Time LabDissectionList all l ab equipment used; i ncluding but not l imited to household i tems (for example;microscopes; beakers; ramps; dissection equipment; etc.)MicroscopeDifferent tissue sample slidesMeter stickReflexes hammerStop watchHeart rate monitorDissection materialsUsing standard Scientific Method outlined by the following questions; describe typical l aboratoryassignments associated with this course.State the problem or concept i nvestigated during this l aboratory assignment. (Do orangesstored i n a refrigerator have more Vitamin C than oranges picked fresh from a tree?) Formulatea hypothesis for this problem using Ôf/then?statements. (If oranges picked fresh from a treehave more Vitamin C; then j uice from these oranges will take l onger to turn a starch solutionblue.)Reaction Time Lab - Does a person?s reaction time increase when their rate isincreased?Reaction Time Lab - The reaction time required to catch a falling meter stick willincrease as a person's heart rate increases.Describe the experiment you performed to prove or disprove your hypothesis. List all essentialmaterials. Describe each step you performed i n the experiment.1. Rest quietly for 5 minutes. Eyes closed; steady breathing.a. Stop watch2. Take your pulse using a method demonstrated by your teacher.3. Measure and record your resting heart rate.4. Have a friend help you place the end of a meter stick between your pointerfinger and thumb in order to pinch it. Place the meter stick so it is justabove your fingers and will drop straight down between your fingers.a. Meter stick5. Without warning; have your friend release the meter stick.6. Pinch your fingers together to catch the meter stick as soon as you realizethe meter stick is falling.7. Measure and record the distance the meter stick fell before being pinched(record the number on the meter stick where your fingers are pinching).8. Repeat steps 4-7 for two additional trials.9. Calculate the average.10. Perform 3 minutes of moderate exercise (jog in place; high knees; jumpingjacks; etc.)11. Take your pulse using a method demonstrated by your teacher.12. Measure and record your moderate exercise heart rate.13. Repeat steps 4-9.14. Perform 8 minutes of intense exercise (run in place; high knees; jumpingjacks; etc.)15. Take your pulse using a method demonstrated by your teacher.16. Measure and record your intense exercise heart rate.17. Repeat steps 4-9.Describe the results of your experiment or study. Use graphs and charts where appropriate.Explain your data or results. Give an analysis of your experiment.There was very little change in reaction time (as measured by the distance themeter stick fell) as compared between the different rate rates.Write a conclusion for your study. Was your hypothesis supported or refuted?The reaction time of a person was not influenced by heart rate. This refutes thehypothesis that reaction time increases as heart rate increases. The averagereaction time was 32cm at a resting heart rate and only changed slightly to 30cmwhen the heart rate was intense. This is very small change. Further investigationcould be focused on reaction time differences between male and females orreaction times of a person not under the influence of alcohol and those who areunder the influence.

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Approved

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• LINT
• Integrated science

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Online / Virtual