Natural Selection: Variation in Species and Normal Distribution
Variation in species and normal distribution are brought to life as students use LAB-AIDSÆ exclusive Variation Profile Tubes. They gain experience in constructing visual graphs, histograms and linear graphs from data collected by the entire class. The idea that greater validity of information gathered from a large sample versus a smaller sample is illustrated beautifully by comparing class results in the Variation Profile Tubes to the student's own histograms and graphs. This is an excellent activity for introducing statistics in science. Continuous and discontinuous variation is explained in the activity as well as the normal distribution of the ìbell curve".
Details at a Glance
- 1 Day | 1 ~50 minute class period
- 2 Activities
- Accommodates unlimited classes, each with 30 groups of 2 students
- Meets our criteria for supporting literacy
- All materials are non-consumable
Scientific Concepts
• Observe physical characteristics
• Create a histograms and linear graphs from collected data
• Discover the effects of pooling data
• Explore variation in nature
• Introduce to statistics and graphing
Guides & Student Sheets
Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.
- Comprehensive Teacher Guide with background information, detailed instruction, example data and answers
- Student Sheets with age appropriate background information, full procedure(s), and analysis items
- Materials necessary for the investigation (beyond common classroom items)
- Safety Data Sheets
Kit Components
- 1 Teacher’s Guide
- 30 Student Worksheets and Guides
- 13 Variation profile tubes
- 1 Variation profile tube holders
- 30 Jumbo striped sunflower seeds, Package
- 1 30-mL graduated cup