ObservationsQualitative vs. Quantitative

Observations

Observation consists of receiving knowledge of the outside world through our senses, or recording information using scientific tools and instruments.

Qualitative Observations

Overview:

•Deals with descriptions.

•Data can be observed but not measured.

•Qualitative → Quality

Examples

Colors, textures, smells, tastes, appearance, beauty, etc.

Quantitative

Overview:

•Deals with numbers.

•Data which can be measured.

•Quantitative → Quantity

Examples:

•Length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc.

Elephant Toothpaste

Record both Qualitative and Quantitative observations as you watch the preparation of Elephant Toothpaste

Qualitative

Quantitative

Elephant Toothpaste Procedures

Measure 125 mL of warm water

Mix ½ oz of dry yeast

Add drops of food color

In a graduated cylinder, measure 20 mL of Hydrogen Peroxide

Add a dash of dish soap

Add yeast mixture to graduated cylinder

Classroom Observations

Find two qualitative and two quantitative observations of this classroom

Qualitative Quantitative