This book looks at the difference between flexible and rigid objects. Using familiar objects, readers discover how flexible and rigid objects are used in everyday life. Readers are encouraged to identify and classify materials based on these physical properties. Contents: What is matter? -- Properties -- Is it flexible? -- Flexible things -- It does not bend -- Flexible or rigid? -- Not quite rigid -- Can they change? -- Make it! -- Flexible you! Interest Level: K-3 Reading Level: 2.3 Lexile Measure: 600 Guided Reading Level: K.