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Short Stories and Questions about Technology - Fifth Grade (Grade 5)

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Grade 5 Technology (Stories) CCSS: CCRA.R.2, CCRA.R.10, RI.5.2, RI.5.10
The toothbrush as we know it today was not invented until 1938. However, early forms of the              toothbrush              have been in existence since 3000 BC. Ancient                 civilizations                 used a "chew stick," which was a thin twig with a frayed end. These 'chew          sticks         ' were rubbed against the         teeth        .

The           bristle           toothbrush, similar to the type used today, was not invented until 1498 in China. The bristles were actually the stiff,          coarse          hairs taken from the back of a hog's neck and attached to handles made of        bone        or bamboo.

Boar            bristles            were used until 1938, when nylon bristles were introduced by Dupont de Nemours. The first         nylon         toothbrush was called Doctor West's Miracle Toothbrush. Later, Americans were influenced by the disciplined           hygiene           habits of soldiers from World War II. They became increasingly concerned with the practice of good        oral        hygiene and quickly adopted the nylon              toothbrush             .
Grade 5 Technology (Stories) CCSS: CCRA.R.2, CCRA.R.10, RI.5.2, RI.5.10
The toothbrush as we know it today was not invented until 1938. However, early forms of the              toothbrush              have been in existence since 3000 BC. Ancient civilizations used a "chew stick," which was a thin twig with a frayed end. These 'chew sticks' were rubbed against the         teeth        .

The           bristle           toothbrush, similar to the type used today, was not invented until 1498 in China. The bristles were actually the stiff, coarse hairs taken from the back of a hog's neck and attached to handles made of        bone        or bamboo.

Boar bristles were used until 1938, when nylon bristles were introduced by Dupont de Nemours. The first         nylon         toothbrush was called Doctor West's Miracle Toothbrush. Later, Americans were influenced by the disciplined hygiene habits of soldiers from World War II. They became increasingly concerned with the practice of good        oral        hygiene and quickly adopted the nylon toothbrush.