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360Science™ blends the best of student-engaging digital content with easily adaptable hands-on labs to offer your students a uniquely comprehensive learning experience.
In this lab experience, in Part I, students investigate diffusion of ions into a model cell using dilute hydrochloric acid solution and agar blocks containing phenolphthalein, an acid–base indicator. In Part II, students construct model cells using dialysis tubing to enclose sample solutions containing water, sodium chloride, glucose, sucrose or albumin. The ability of various substances to diffuse across a semipermeable dialysis membrane is investigated by measuring the net direction of osmosis for five different pairs of solutions representing model cells and the surrounding cytoplasm, respectively. Editable, differentiated instructions range from a time-sensitive prescriptive lab to full open inquiry, and robust online videos and content—including a virtual reality (VR) simulation—help students prepare for and better understand the labs they’re conducting.
This item can only be shipped to schools, museums and science centers
360Science™: Diffusion and Osmosis
Concepts: Osmosis, diffusion, cellular transport, surface area to volume ratio
Outcomes: By completing this investigation students gain a better understanding of how a cell’s surface area to volume ratio influences the rate at which diffusion occurs. A cell’s ability to efficiently exchange materials with the environment is critical to its function and survival.
Associated Phenomena: Homeostasis
Our 1-year option provides access to all digital content for one year plus lab supplies for a single class of 30 students. Our 3-year option extends access to digital content to three years, with a 30% discount on refill supply kits years 2 and 3.
What is Flinn 360Science™?
We’re introducing a whole new way to teach experiential science! We’ve taken a hard look at science study from all perspectives and, thanks to the feedback of thousands of teachers nationwide, we’ve created a way to make it easier to provide personalized instruction while delivering the kind of lab experiences your students truly need.
Our new and comprehensive learning solutions are designed to bring science to life by giving you all the tools you need to incorporate more (and effective) hands-on learning in your classroom or lab. 360Science allows you to provide your students with the support they need to make real-world connections to key scientific principles and help make those abstract concepts concrete.
Every 360Science lab solves the most common challenges educators face in bringing more hands-on science to their students—from not having enough time to matching the right level of challenge for students’ abilities to providing appropriate background content, safety techniques, assessments and more.
Enable student-driven, blended learning through a unique combination of leveled lab instructions supporting prescriptive, guided- and open-inquiry lab exercises (see PDF resource for specific details) with robust digital content, such as videos and carefully curated Open Educational Resources (OER)—along with virtual reality and simulation exercises. From editable, digital instructions to assessments and alignment with Next Generation Science Standards (NGSS), we have everything you need to improve mastery, remove the intimidation factor and foster your students’ natural curiosity.
Materials Included in Kit:
Agar, 40 g
Albumin, 50 g
Dextrose (glucose), C6H12O6•H2O, 200 g
Hydrochloric acid solution, HCl, 0.1 M, 1500 mL
Phenolphthalein, 1% alcoholic, 30 mL
Sodium chloride, NaCl, 75 g
Sodium hydroxide solution, NaOH, 0.1 M, 150 mL
Sucrose, C12H22O11, 1000 g
Agar trays, 2
Cups, plastic, 9-oz, 45
Dialysis tubing, 12 meters
Knife, plastic, 8
Ruler, metric, 8
Spoons, plastic, 10
HS-LS1-2. Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.