background download resources feedback



Who Was Anton Leeuwenhoek?

Students are introduced to Internet research, saving information to disk, and using Internet resources.

A Letter from Leeuwenhoek

Students analyze the historical changes in microscope technology

Robert Hooke

This is a replication of Hooke's investigation.

What Shape Are Cells?

Slide show of one-celled organisms and body cells.

Cell Discovery Timeline

Major events leading to the invention of the microscope and discovery of cells, cell parts, and cell processes.

Parts of a Cell

A look at the contents of a cell.

Parts of a Cell-Definitions

The definitions used in this interactive lesson go beyond "the mitochondria is the powerhouse of the cell"..

Organelles Aren't Just Circles and Blobs!

Two images are available: a labeled diagram and a micrograph of the organelle. The activity does not work in Netscape.

Cell Play

Students perform a play which includes descriptions and functions of organelles.

3-D Cell Model

A cell is constructed of common materials. Student write description and function of organelles.

Cell Mural

A two dimensional model is made including all organelles.
Cell Membrane Molecules called phospholipids make up the basic structure of the cell membrane. Students build a paper model of the membrane layers.

Cell Database

Students research each cell organelle and enter the information in a database.

Plant Cell Lab

Size in microns is calculated .

Plant Cell Lab - Onion Cells

Onion cells are examined; organelles are identified and measured.

Plant Cell Lab - Elodea

Elodea Cells are examined; structures identified and measured.

Cell Processes

Diffusion and Osmosis

Students investigate the permeability of various cell wall models.

Cell Membrane Model

A plastic bag and jelly beans is used to simulate the movement of molecules into a cell.

Mitosis Model


Stages of Mitosis

The stages are described, students match the description to the correct stage image.

Mitosis Is For Chromosomes

The stages are described in terms of the chromosomal changes. A brief description of what happens to the chromosomes during each stage is listed.

Meiosis Chart and Model

Stages are compared to mitosis; students construct models of each stage.


A model of chromosomes is used; students pair each of the chromosomes and determine whether the organism is male or female based on their pairings.

Punnet Squares

This exercise provides practice in calculating probability of geno- and phenotypes with one and two chromosomes.


Introduction The student is introduced to the materials that will be used for simulating DNA strands.

DNA Model

Students use beads to build a simulated model of a gene.

DNA Replication

Beads are used to simulate the replication of a DNA strand.

What Are Chromosomes?

This lesson describes chromosomes and relates genes to the DNA model of the previous three activities.


The Genetic Code

A sequence of symbols is used to model DNA. Students determine the Pattern, or code.

Whose Eyes?

Common inherited traits are identified. Students determine whether or not they have the dominant or recessive trait.

Ninsect Activity

Students use a hypothetical organism to determine the geno- and phenotypes of several generations.

Have You Found Your Long Lost Twin?

Phenotypes are observed and plotted on a genetic wheel.

Did Mother Nature Give You a Fair Shake?

Dice are you used to model probability of inheriting a certain trait.







These pages authored and maintained by Marcella Dawson. Revised 3/2002 . Copyright 1995 CRPC GirlTECH. All rights reserved. . Email your comments. These pages were developed through GirlTECH '96, a teacher training and student technology council program sponsored by the Center for Research on Parallel Computation (CRPC), a National Science Foundation Science and Technology Center.