Bøger af Mark Weakland

We can see light. We know it makes plants grow. Light pours from the sun and from glowing light bulbs. But we can't touch it, or hold it. What is light? Learn about this science basic, and then get hands-on with an experiment that will light up the classroom.

Many teachers are frustrated with not only how spelling traditionally is taught, but also with finding time to support young spellers with explicit strategy instruction. So Mark Weakland has developed Super Spellers, an approach to teaching spelling in a way that is research-based, focused, developmentally appropriate, and tied to authentic reading and writing.

Gemm, Nova, and Jarrell are traveling to a space station orbiting Jupiter. On their two-year journey, they experiment with the oxygen levels given off by saplings in microgravity environments. Will they be able to prove that saplings give off more oxygen in space, and can they get their results back to the scientists on Earth?