Praxis Elem CKT Science case studies
Praxis Elem CKT Science · Put your knowledge to work in context.
The Praxis Elementary Education: Content Knowledge for Teaching Science test (test code 7814) is an ETS subject assessment for candidates who are preparing to teach science as part of an elementary generalist license, or who are adding science to an existing certificate. Its distinctive focus is content knowledge for teaching: not just knowing the science, but knowing how children reason about it. The Praxis Elem CKT Science case studies are 5 cases and about 3,168 words.
1Bean Seeds in the Dark
Alvarez's fourth-grade class (26 students) is investigating whether bean seeds need light to germinate. Each of six groups places 10 soaked pinto beans on a damp paper towel inside a sealed plastic bag.
661 words, about 3 min2The Floating Lid and the Sinking Marble
Chen's second-grade class (22 students) is testing whether objects sink or float. The station includes a 22-cm plastic lid (18 g), a metal spoon (15 g), a glass marble (5 g), a wooden block (40 g), and a peeled orange (140 g).
665 words, about 3 min3Shadow Data on an Irregular Schedule
On a sunny October day, Ms. Rivera's third-grade class (24 students) measures the shadow of a meter stick every 45 minutes.
608 words, about 3 min4The Whale Card Doesn't Fit
Okafor's third-grade class (25 students) is sorting animal picture cards into mammals, reptiles, birds, and fish. The kit includes a whale, bat, penguin, shark, dolphin, snake, and robin.
597 words, about 3 min5The Leaky Bag and the Missing Mass
Patel's fifth-grade class (28 students) is investigating conservation of matter. Each group places 100 mL of vinegar in a quart zip bag, puts 5 g of baking soda in a small cup inside the bag, seals the bag, and measures total mass on a balance.
637 words, about 3 min