Teach about cells with this engaging lab that uses everyday materials! Next Generation Science Standards want us to dive deep into learning. NGSS MS-LS1-2 focuses learning on 5 cell structures, the cell membrane being one of those.
Your students will love seeing an egg’s shell dissolve in vinegar exposing the membrane that will simulate a cell membrane. Students rush to class to see the egg change colors in food coloring while learning about how materials cross a cell membrane.
A raw chicken egg is placed into five different liquids over the course of two weeks (vinegar, water, water with food coloring, salt water, and a liquid their group chooses.) This fun investigation is done right in a glass jar, glass, or beaker (I like plastic beakers) with household materials. You will love the clear instructions, steps for writing a C-E-R (Claim-Evidence-Reasoning) lab report, simple steps for students to create a graph with their data, and the grading rubric. Student samples of completed lab reports are included as well.
Your students will learn...
How molecules move across a cell membrane
How to use a model to simulate phenomena (observable occurrences)
How to collect and record data
How to create a graph and drag and drop it into the lab report using NCES Kid Zone Create a Graph- a free online tool at https://nces.ed.gov/nceskids/graphing/classic/
How to create a C-E-R (Claim-Evidence-Reasoning) lab report
How to take measurements in centimeters
Next Generation Science Standards (NGSS) for Middle School-
MS-LS1-2: Develop and use a model to describe the function of a cell as a whole and ways parts of cells contribute to the function. [Emphasis is on the cell functioning as a whole system and the primary role of identified parts of the cell, specifically the nucleus, chloroplasts, mitochondria, cell membrane, and cell wall.]
CA Integrated NGSS model: 6th grade
NGSS Crosscutting Concepts:
Structure and Function
Cause and Effect
NGSS Science and Engineering Practices:
Developing and Using Models
Planning and Carrying Out Investigations
Analyzing and Interpreting Data
Obtaining, evaluating, and communicating information
Materials per group (I do 6 students in a group): plastic beaker or transparent container, one chicken egg, vinegar, water, food coloring, salt, flexible measuring tape, computer and internet access to create graph