Classification: Dichotomous Key

Tenth graders use a classification key to identify organisms.  In this classification activity students identify freshwater species of fish and document their observations. 

Find similarities in seemingly unlike organisms. The second instructional activity in a series of 12 builds the concept of a taxonomy and explores the use of a dichotomous key. Learners begin in part one by attempting to group a set of...

It's a classification sensation! Demystify why we classify using an inquiry activity that helps your class sort things out. Groups begin by classifying a variety of shoes before they research organisms and design their own dichotomous...

Biology novices name the seven levels of classification and use binomial nomenclature for naming living organisms. The first half of this presentation bestows a brief history of taxonomy, while the second half instructs on how to use our...

Carolus Linnaeus designed the binomial nomenclature system of naming organisms that is still in use more than 200 years later. By viewing this PowerPoint, upcoming biologists learn how to use it. They are also introduced to the hierarchy...

A short video introduces the things other than carbon that can branch off the main chain of a hydrocarbon. The examples have double bonds, so the practice involves many of the nomenclature rules that the video series has already covered.

Explore the history of taxonomy, the naming of organisms, with a video about Linnaeus and his classification system that is still used by scientists today to show the evolutionary relationships among organisms. 

Where did our classification system come from, and why is it so important? Budding biologists discover binomial nomenclature through a brief but informative video. The resource covers the three kingdoms, then branches out from there to...

Mr. Khan explains with pictures and diagrams Carl Linneaus' taxonomy system and the biological tree of life. He mentions that the debate still continues regarding how to classify organisms and that newer technology that examines DNA is...

Take the bewilderment out of basic formula writing! Young organic chemists explore the various ways of writing chemical formulas in an animated video. The narrator explains the process of writing formulas in displayed, empirical,...