Innovating Science® - Introduction to Streak Isolation and Aseptic Technique
Manufacturer ID - IS3611
Students will learn about acids and bases through a class discussion and then test a dilute acid and dilute base with neutral litmus paper to learn how the paper indicates something is acidic or basic. Once that skill is learned they can move on to test some common items that would be found around their house to determine if they are acids or bases. Optional: Extra litmus paper is included to test more items either from home or around the school building for a greater understanding of acids and bases. The activity contains enough materials for 6 groups of students.
In this activity, students will be introduced to the skills and techniques that microbiologists use on a daily basis. Students will practice these techniques by performing a streak isolation with the provided bacterial cultures, as well as samples they collect from their classroom, to learn about different types of media and how bacterium reproduce.
Aligned to the Next Generation Science Standards (NGSS)*
Disciplinary Core Ideas: LS1.A
Performance Expectations: MS-LS1-1
Cross Cutting Concepts: Scale, Proportion, and Quantity
Engineering Practices: Planning and Carrying Out Investigations
2 x 200mL Prepared tryptic soy agar
10 Lyophilized cultures of Serratia marcescens
20 Sterile petri dishes
10 Tryptic soy broth tubes
10 Inoculation loops
10 Sterile pipettors
10 Sterile cotton swabs, pk/2
*"Next Generation Science Standards" is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards was involved in the production of, and does not endorse, this product.
|Cross Cutting Concepts
|Cause and Effect
Scale, Proportion, and Quantity
|Planning and Carrying Out Investigations
|Country of Origin
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