What happens when a baker mixes up all her white powdered ingredients and ends up with a terrible-tasting recipe? Mrs. McGurl’s fifth-grade scientists took on this question during a hands-on investigation that turned them into matter detectives!
Students observed and compared the physical properties of 12 white powders, such as salt, sugar, flour, and baking soda. They examined the grain size, texture, color, solubility in water, and how each reacted to vinegar. By using these clues, they worked to identify each substance, discovered patterns in their structures, and explored both physical and chemical changes.
Throughout the challenge, students applied prior knowledge, practiced careful observation, and learned how easily similar-looking materials can produce surprising results. The activity gave them an authentic, hands-on understanding of how scientists classify and identify materials in the real world, all while having fun solving a “mystery recipe”!
Mrs. McGurl’s class demonstrated that science is not only about experiments, but also about curiosity, problem-solving, and making discoveries through investigation.