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Self-Correct in a Dense Text is a free printable Grade 5 English worksheet on rereading an argued text until the reasoning is clear, aligned to Common Core standard RF.5.4. It prints 2 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 13 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Self-Correct in a Dense Text

RF.5.4

NameDate

Read the text, then answer the questions.

1.Read the text, then answer the questions.

What Sleep Is For

Sleep is not switching off. Parts of the brain are busier asleep than awake. Two claims are well supported. The first is that sleep consolidates memory: during deep sleep, the day's experiences are replayed and moved from short-term storage into long-term. Interrupt deep sleep and recall of the previous day drops measurably. The second is that sleep clears waste. The spaces between brain cells widen during sleep, and fluid washes through, removing proteins that build up while awake. A third claim — that a particular number of hours suits everybody — is not supported. Need varies with age and between individuals, and self-reported sleep is unreliable. Teenagers are a special case. Their body clocks genuinely shift later at puberty, which is a biological fact rather than a preference, and school start times mostly ignore it.

  1. 1. What does "self-reported" mean, and why does the author mention it?
  2. 2. What happens to recall when deep sleep is interrupted?
  3. 3. What shifts in teenagers at puberty?
  4. 4. What happens to the spaces between brain cells during sleep?
2.Read the text, then answer the questions.

How a Vaccine Teaches the Body

Your immune system learns. Meet a disease once and, if you survive it, you are usually protected afterwards. A vaccine gives the lesson without the disease. The method is old. In eighteenth-century Britain, milkmaids were known not to catch smallpox. Edward Jenner reasoned that the cowpox they caught from cattle was protecting them, and in 1796 he tested it on a boy — a procedure no ethics committee would permit now. A modern vaccine shows the immune system a harmless piece of a pathogen: a killed virus, a weakened one, or a single protein from its surface. The body makes antibodies against that piece, and keeps the recipe. Because the recipe is kept, the real pathogen is met by a defence already in place. There is a second effect. If enough people are immune, the pathogen cannot find a chain of hosts, so those who cannot be vaccinated are protected too. That effect fails below a threshold, which is why coverage rather than availability is what matters.

  1. 1. In what year did Jenner test his idea?
  2. 2. What is a "pathogen"?
  3. 3. What does "threshold" mean here?
  4. 4. What did Jenner reason about milkmaids?

LessonPrint · RF.5.4 · Set 13 · free to copy for classroom use

Answer key — Self-Correct in a Dense Text

Set 13. Prints on its own sheet.

  1. 1.1. Given by people about themselves — the author mentions it because it makes sleep data unreliable. 2. It drops measurably. 3. Their body clocks shift later. 4. They widen, and fluid washes through.
  2. 2.1. 1796. 2. An organism that causes disease. 3. The level of coverage below which the collective effect stops working. 4. That the cowpox they caught from cattle protected them from smallpox.

Last reviewed 2026-09-05. Aligned to RF.5.4 of the Common Core State Standards for English language arts.