Write Algebraic Expressions

My Notes Level 1 Support Level 2 Standard Level 3 Enrichment

Today's objectives

Content Objective: I can write algebraic expressions from words and real-world situations.

Language Objective: I can explain my expression using the words variable, coefficient, constant, and algebraic expression.

📖 See Learn It for the explanation and worked examples, and the Vocab tab for the words. These are your notes to fill in and keep.

✏️ Fill in each blank as we go. Use the Word Bank to help you.

📚 Word Bank — fill each blank with the best word

👆 Tap any word to see what it means and a picture.

Level 3: try the blanks from memory first, then check the bank.

1A letter that stands for an unknown number is a .
2A math phrase with variables, numbers, and operations but no equal sign is an .
3The number multiplied by a variable, like the 7 in 7n, is the .
4A term that is just a number and never changes, like the 5 in 3x + 5, is a .
5Terms with the same variable part are .

Write About the Math Guided ESOL writing

Use the support level you need. Every level answers the same math question.

1. Understand the Question

compare

How do you turn words into an expression? Why does '12 less than a number g' become g − 12 and not 12 − g?

Your job: Answer the question. Use math evidence. Explain how the evidence proves your answer.Responde la pregunta. Usa evidencia matemática. Explica cómo la evidencia demuestra tu respuesta.

2. Plan Your Math Words

Check at least two words you will use.

Variable — A letter that stands for a number that is unknown or can change.Variable — Una letra que representa un número desconocido o que puede cambiar. Algebraic Expression — A math phrase that has at least one letter.Expresión algebraica — Una frase matemática que tiene al menos una letra. Coefficient — The number in front of a letter, like the 3 in 3x.Coeficiente — El número frente a una letra, como el 3 en 3x. Constant — A number on its own that does not change.Constante — Un número solo que no cambia. Like terms — Terms with the same letter, like 2x and 5x.Términos semejantes — Términos con la misma letra, como 2x y 5x.

Say it first: Say your idea to a partner or quietly to yourself before you write.Di tu idea a un compañero o en voz baja antes de escribir.

The words '___' mean ___, so the expression is ___.Las palabras '___' significan ___, así la expresión es ___.

3. Build Your Explanation

Model the parts: This model shows the parts of an explanation. It does not answer your writing question.

Claim: Write 12t + 50: the 12t grows with tickets, the 50 stays fixed.

Evidence: Students write 12t + 50, identify t as the variable number of tickets, 12 as the coefficient (price per ticket), and 50 as the constant venue fee that does not change.

Reasoning: This evidence connects the definition of algebraic expression to the mathematical claim.

Start

Most language support

Complete the frames. Use the word bank.Completa las oraciones. Usa el banco de palabras.

The words '___' mean ___, so the expression is ___.Las palabras '___' significan ___, así la expresión es ___.
It is g − 12, not 12 − g, because 'less than' means ___.Es g − 12, no 12 − g, porque 'menos que' significa ___.

Build

Some language support

Write two connected sentences. Use because, so, or but.Escribe dos oraciones conectadas. Usa porque, entonces o pero.

My claim is ___.Mi afirmación es ___.
I know because ___.Lo sé porque ___.
So ___.Entonces ___.

Explain

Light language support

Write a claim, give math evidence, and explain your reasoning.Escribe una afirmación, da evidencia matemática y explica tu razonamiento.

My claim is ___.Mi afirmación es ___.
My math evidence is ___.Mi evidencia matemática es ___.
This proves ___ because ___.Esto demuestra ___ porque ___.

4. Check Your Explanation

I answered the question.Respondí la pregunta. I used math evidence: numbers, an equation, a model, or a comparison.Usé evidencia matemática: números, una ecuación, un modelo o una comparación. I explained how the evidence proves my answer.Expliqué cómo la evidencia demuestra mi respuesta. I used at least two math words.Usé por lo menos dos palabras matemáticas. I reread complete sentences and punctuation.Volví a leer mis oraciones completas y la puntuación.