This engaging title introduces readers to materials that are either hot or cold. Accessible text and close picture support invite readers to identify hot and cold things around them and understand why things melt and freeze. Readers will also learn how people measure temperature. Contents: What is matter? -- What are properties? -- Is it hot? -- Is it cold? -- What is temperature? -- Temperature clues -- Using a thermometer -- Melting -- Freezing -- Hot and cold! Interest Level: K-3 Reading Level: 2.8 Lexile Measure: 480 Guided Reading Level: K.