Grade by Grade
A. Literacy Connections and Applications / C. Comprehension: Understanding and Responding to Texts · Understanding and Responding to Texts

Before Reading: Using What I Know and Making Predictions

C2.1 C2.3About 35 minutes
Learning goals
  • I can name where my prior knowledge comes from: experiences, other texts, family and community, school and media.
  • I can explain how my prior knowledge helps me connect to and understand a new text.
  • I can make predictions using background knowledge, text features and evidence from the text.
  • I can ask questions to check whether my predictions were correct.

Words to know

prior knowledge
What you already know before you read. Also called background knowledge.
source
Where something comes from.
prediction
A smart guess about what will happen or what you will learn, based on clues.
confirm
To find evidence that shows your prediction was right.
evidence
Words, pictures or facts in a text that support an idea.
sap
The watery liquid inside a tree. Maple sap is boiled to make syrup.

Remember from Grade 3

In Grade 3 you used a K-W-L chart, made predictions using what you know, text features and evidence, and adjusted predictions when you read new information.

In Grade 4 you will name where your prior knowledge comes from, explain how it helps, and ask questions to check your predictions as you read.

Hook: A head start

Before a hockey game, players think about the other team: They pass a lot. Their goalie is strong on the left side. That knowledge gives them a head start.

Before you read, your prior knowledge gives you a head start too. Thinking about it first means your brain is ready to connect new ideas to old ones.

Source of prior knowledgeExample: before reading a story about a sugar bush
Personal experienceI went to a maple syrup festival and saw sap buckets on trees.
Other textsI read a book about how syrup is made.
Family and communityMy grandpa told me about tapping trees when he was young.
School learningIn science, we learned trees need water and sunlight.
MediaI saw a video of syrup boiling in a sugar shack.
Prior knowledge comes from many sources.

Making and checking predictions

Make predictions with three kinds of clues:

  1. Background knowledge: what you already know.
  2. Text features: the title, cover, headings, pictures, captions.
  3. Evidence from the text: what characters say and do, and what has happened so far.

Then, as you read, check them by asking questions:

  • Was my prediction correct? Which part?
  • What evidence confirms it, or shows it was wrong?
  • What new clue changes what I think will happen?

A prediction that turns out wrong is not a mistake. It means you were thinking, and checking it helps you notice important details.

What I already knowText featuresEvidence from the textPredictRead onCheckRight? Wrong?What evidence?A new clue? Make a new prediction.
Three kinds of clues lead to a prediction. Then read on, check it with evidence, and make a new one.

Read in parts: The Sugar Bush

Part 1

On the first Saturday of March break, Nadia rode with Uncle Ray to his sugar bush, a forest of maple trees. Blue plastic tubes ran from tree to tree like spiderwebs. A few old-fashioned metal buckets hung on the biggest trees.

"I want to taste syrup straight from the tree!" said Nadia.

Uncle Ray laughed. "We'll see. It's been freezing day and night all week. The sap needs warm days and cold nights to run."

Worked example

Let's predict using all three kinds of clues

Before reading on: Will Nadia get to see sap running today? What will it taste like?

  1. Background knowledge: I know maple sap flows in early spring. Uncle Ray says sap needs warm days and cold nights.
  2. Text features: The title is The Sugar Bush, so the story is probably about making syrup.
  3. Evidence from the text: It's been freezing day and night all week. So the sap probably isn't running yet.
  4. Prediction 1: The sap won't run at first, but the day will warm up and it will start dripping.
  5. Prediction 2: Nadia thinks sap is syrup. I predict she'll be surprised that sap doesn't taste like syrup.
  6. Questions to check later: Did the day warm up? What did the sap really taste like?

Predictions: The sap will start once it warms up, and Nadia will be surprised by the taste. I'll check both as I read.

Part 2

By noon, the sun was shining. Water dripped from the icicles on the sugar shack roof. Nadia heard a tiny plink inside one of the metal buckets. Then another. Plink. Plink.

"It's running!" she shouted. She peeked in. The sap was clear, like water. Uncle Ray let her dip a clean cup. Nadia took a sip.

"It's just water!" she said. "Well, a tiny bit sweet."

"That's right," said Uncle Ray. "It takes about 40 litres of sap to make 1 litre of syrup. We have to boil away most of the water."

Worked example

Let's check our predictions

Ask the checking questions. Were the predictions correct?

  1. Did the day warm up? Yes: the sun was shining, water dripped from the icicles.
  2. Did the sap start running? Yes: plink in the bucket; Nadia shouts It's running! Prediction 1 is confirmed.
  3. Was Nadia surprised by the taste? Yes: It's just water! Well, a tiny bit sweet. Prediction 2 is confirmed.
  4. New clue: 40 litres of sap make 1 litre of syrup, and they must boil it.
  5. New prediction: Next, they'll boil the sap in the sugar shack, and it will take a long time.

Both predictions were confirmed with evidence. The new clue about boiling helps me make a new prediction.

Part 3

Inside the sugar shack, steam rose from a long metal pan called an evaporator. Uncle Ray fed wood into the fire underneath. Hours later, the sap had turned golden and thick.

"Long before European settlers arrived," Uncle Ray said, "First Nations peoples in this area were collecting maple sap and boiling it to make maple sugar. People have been making this sweet food here for a very long time."

That night, Nadia poured syrup on her pancakes. "Forty litres," she said, licking her fork. "Worth every drop."

Part 1Part 2Part 3The sap will run onceit warms up."plink" in the bucketNadia will be surprisedby the taste."It's just water!"They will boil the sapfor a long time."Hours later..."predictions✓ = confirmed, with evidence
The predictions for The Sugar Bush, and the evidence that confirmed each one in the next part.

Prior knowledge can be fixed too

Sometimes what you think you know is not quite right, like Nadia thinking sap tastes like syrup. Good readers update their prior knowledge when a text teaches them something new.

Just for fun

Funny-but-true: maple sap straight from the tree is about 98% water. No wonder Nadia said, It's just water! Her prediction was right, and so was her tongue.

Hands-on activity

Prediction checkpoint bookmark

You need: a strip of paper, a pencil, and a chapter book or picture book you haven't read.

  1. Before reading, write on the bookmark: My prior knowledge comes from: (experience, other books, family, school or media).
  2. Look at the cover, title and back and write one prediction.
  3. Choose 3 stopping points (for example, the end of each chapter). At each one, write: Was I right? Evidence: ___. New prediction: ___.
  4. When you finish, circle the predictions that were confirmed and put a star by the ones you changed. Tell a grown-up which clue made you change your mind.

Your turn

1

Name four sources of prior knowledge.

2

Why did Uncle Ray think the sap might not run?

3

Which clue in Part 2 confirmed that it warmed up?

4

What did the sap taste like? Was Nadia surprised?

5

How many litres of sap does it take to make 1 litre of syrup?

6

Name the three kinds of clues used to make predictions.

7

Write one question you could ask to check a prediction.

More practice: warm-up

1

What is prior knowledge?

2

What is a sugar bush?

3

What does confirm mean?

4

What sound did the sap make in the bucket?

5

Is a wrong prediction a mistake?

More practice: on your own

1

What prior knowledge from science could help you understand The Sugar Bush?

2

What did Nadia learn that changed her prior knowledge?

3

What does Uncle Ray share in Part 3 about the history of maple sugar?

4

Make a prediction: What might Nadia want to do next March break? Give a reason.

5

How does thinking about prior knowledge before reading help you?

Challenge

1

Explain how a text feature could lead to a wrong prediction. Give an example.

2

Two readers made different predictions about The Sugar Bush. One has visited a sugar shack, and one hasn't. Why might their predictions differ?

3

Write a new Part 4 opening sentence that gives a clue for the reader to predict from. Then say what you'd predict.

Check your understanding

Quiz

1.

Which is a source of prior knowledge?

2.

Which kinds of clues help you predict?

3.

Why did the sap start running in Part 2?

4.

Nadia's surprise that sap tastes like water shows...

5.

Which question checks a prediction?

6.

A wrong prediction...

For parents and teachers

What this lesson teaches: Grade 4 students identify and explain prior knowledge from various sources, including personal experiences, that helps them make connections and understand new texts (C2.1). They make predictions using background knowledge, text features and evidence, and pose questions to check whether predictions were correct (C2.3).

Facts used: Maple sap runs best when days are above freezing and nights are below freezing. It takes roughly 40 litres of sap to make 1 litre of syrup (the amount varies with the sap's sugar content). First Nations peoples made maple sugar long before European settlement.

How to help at home:

  • Before reading, ask: "What do you already know about this? Where did you learn it?"
  • Stop at exciting moments: "What do you predict? Why?" After reading on, ask: "Were you right? What told you?"
  • Model it yourself: "I thought the mom would be angry, but she laughed. I was wrong, so let's see why."

Common difficulties:

  • Wild guesses. Ask for the clue behind every prediction.
  • Never checking. Make checking a habit with bookmarks or sticky notes.
  • Feeling bad about wrong predictions. Celebrate changed predictions as good thinking.