True book.

"True books on science experiments"--P. [4] of cover

Where did they go? -- How can the sun and moon disappear? -- Experiment 1: blocking the sun -- Experiment 2: hiding in the shadows -- What makes a full moon? -- Experiment 3: changing its shape -- Experiment 4: passing overhead -- Experiment 5: circling around -- What can a shadow tell you? -- Experiment 6: telling the time -- Experiment 7: traveling in a straight line -- Fun with the sun and moon -- Experiment 8: sending messages

Projects and experiments explore scientific principles related to the sun and moon, particularly those which explain eclipses

690

590L

Decoding demand: 79 (high) Semantic demand: 93 (very high) Syntactic demand: 91 (very high) Structure demand: 78 (high)