Seed Germination: Preparing for an Experiment Seventh Grade Science Seed Germination: Preparing for an Experiment

Introduction Purpose Keys to Successful Experiments seed are useful abundance variety low cost portability

Seed Germination Focus of the experiment Experimental treatments Environmental factors Terms: radicle, shoot, seedling

Scientific Names Name Must be in Latin Name Must be a binomial 2 parts, genus & species

Diagram of the Parts of a Seed Dry & pre-soaked seed examinations Label drawing common name family name scientific name

Take-Home Exercise Take home baggies, towels, & seeds Record names of seed types

Construct an Observation Table Use space on p.6. Observations and Measurements Bring baggies with sprouted seeds back to lab next week Kidney beans, day 2

Summarizing Data Data Statistics Populations vs. Samples quantitative vs. qualitative variables error, precision, and bias

Graphing - + Correlation: bar graph (frequency within categories) Height (in) Comfort in airline seats - Correlation: bar graph (frequency within categories) Height (in) Weight (lb) + Figure 1: Percent Grade in Classes 20 40 60 80 Band Math Science Art Computers % Grade Classes

Descriptive Statistics mean population sample median range standard deviation

Presenting Tables Rows & columns Units must be indicated, e.g., grams (g) centimeter (cm) millimeters (mm)

Seed Germination Experiment

Introduction Physical factors of the environment Biotic vs. Abiotic Climate Soil Stimulants Inhibitors Biotic vs. Abiotic Competition Allelopathy

The pH Scale neutral acidic basic or alkaline

pH Example ACID NEUTRAL BASE

Example Using pH

Fire Exposure Example

Fire Exposure Example CONTROL TREATMENT 1 TREATMENT 2 TREATMENT 3

Supplies and Equipment Provided: ziploc baggies, paper towels, and seeds Not Provided: inexpensive common household items needed to carry out the experiment

Designing an Experiment problem hypothesis procedure prediction construct data table

Check it Out (p.7.) I will check your experimental design Begin experiment after you get the “OK” Conduct experiment for ONE WEEK

Writing up Your Experiment Must Have a Formal Lab Report Write-up which includes Observations table graph Discussion