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We entered the solution chemistry unit with the goal of using Ward’s Data Hub, new instrumentation at the high school, for the first time. \u00a0I generated a lab over fall break that allowed both my personal goal, as well as clinical faculty’s, to meld into a singular laboratory activity.<\/p>\n
Students were asked to calculate how to make a 1.0 M NaOH solution, then requested to make it using appropriate glassware. \u00a0Next, they were asked to perform a dilution calculation and then generate a\u00a0dilution from the stock solution that they initially made using appropriate glassware. \u00a0The students were then asked to calculate\u00a0and make a second dilution of the stock solution, similar in method to the second solution they made. \u00a0Finally, the pH probe of the Data Hub was used to check the pH of each solution to ensure that they were made to the correct concentrations.<\/p>\n
Even with a well written explanation, and with correct calculations, students struggled with the confidence that they could actually make a given solution. \u00a0They were much more confident with dilutions, even though it was the first time that they had used pipettes. \u00a0I like how well integrated the concepts of molarity, dilution, and pH are in this lab, and plan to use it in again in my own future classroom.<\/p>\n
InTASC standards 3-4-5-6-7-8 were all covered during this lab though the planning, implementation and execution of it. \u00a0HLPs 2-5-6-11-13-14 were also incorporated throughout. \u00a0I spent the better part of fall break generating this lab, and really poured a lot of effort into it. \u00a0It always amazes me how long it takes to generate an activity from scratch, and how quickly errors are found in it once it is put to use. \u00a0This is a great way to obtain instant feedback to improve activities, however.<\/p>\n","protected":false},"excerpt":{"rendered":"
The origin of this activity stemmed from myself graduating with a degree in chemistry,\u00a0without ever\u00a0calculating or making a 1.0 M solution. \u00a0I felt that this was a disservice to myself, … Continue reading Find Me a Solution, Please<\/span>