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Add Audio and Visuals is a free printable Grade 4 English worksheet on choosing where a visual develops the main idea, aligned to Common Core standard SL.4.5. It prints 2 questions with an answer key on its own sheet of paper, in 25 versions, 22 of them with 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 8 of 25 · the same problems every time you open this link.

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One paper per pupil

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Set 1 has all 25 in a single PDF. 22 of these 25 sets ask different questions — this skill does not have 25 questions to give. The rest reorder them, so no two pupils have the same paper in front of them.

Add Audio and Visuals

SL.4.5

NameDate

Read the text, then answer the questions.

1.Read the text, then answer the questions.

Lichen

A lichen is not one organism. It is a fungus and an alga living as one body. The fungus provides the structure and holds water. The alga photosynthesises and makes sugar. Separated, the fungus starves and the alga dries out. Because it needs no soil, a lichen can grow on bare rock, on gravestones and on the roofs of cars that have not moved for a decade. Lichens grow extremely slowly — some crustose species less than a millimetre a year. Scientists use that rate to date rock surfaces, a method called lichenometry. Lichens also absorb whatever is in the air. Where the air is dirty, they disappear, which makes them a living measure of pollution.

  1. 1. What would a diagram of a lichen need to label?
  2. 2. Determine the main idea of this text and explain how key details support it.
2.Read the text, then answer the questions.

Why Clocks Agree

Until the 1840s, every British town kept its own time, set by the sun. Noon in Bristol was about ten minutes after noon in London. That was no problem while the fastest thing on the road was a horse. The railways changed it. A timetable cannot work if every station measures noon differently, and trains sharing a track need to agree about when. So the railway companies imposed London time on their whole network. People called it railway time. Some towns kept two minute hands on the town clock for years, one local and one railway. In 1880 Parliament made a single time legal across the country. The sun had been overruled by the timetable.

  1. 1. What would an illustration of a two-handed town clock convey?
  2. 2. Determine the main idea of this text and explain how key details support it.

LessonPrint · SL.4.5 · Set 8 · free to copy for classroom use

Answer key — Add Audio and Visuals

Set 8. Prints on its own sheet.

  1. 1.1. The fungal structure holding water and the algal cells inside it. 2. A lichen is a partnership that can live where nothing else can — supported by the bare rock, the slow growth and the pollution sensitivity.
  2. 2.1. That both times were kept at once for years, which is how contested the change was. 2. The railways forced Britain onto one clock — supported by the ten-minute gap, the timetable problem and the 1880 law.

More practice for SL.4.5

Add audio and visuals to a talk where they strengthen the idea.

Teaching this next? Audio and Visuals in a Presentation is the 40-minute plan for it, with the misconceptions to expect.

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Last reviewed 2026-09-05. Aligned to SL.4.5 of the Common Core State Standards for English language arts.