Prime Factorization — Notes Packet

My Notes Level 1 Support Level 2 Standard Level 3 Enrichment

Today's objectives

Content Objective: I can write a number as a product of its prime factors using a factor tree.

Language Objective: I can explain how I broke a number down using the words prime number, composite number, factor, and exponent.

📖 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 whole number greater than 1 with exactly two factors, 1 and itself, is a number.
2A whole number greater than 1 that has more than two factors is a number.
3 — Writing a number as prime numbers multiplied together.
4A number that divides evenly into another number is called a .
5I can break a number into its prime factors step by step using a .
6In 2³, the small number 3 is the and it shows 2 is multiplied 3 times.

Write About the Math Guided ESOL writing

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

1. Understand the Question

explain

Look at your factor tree for 60. How did you decide which numbers to break apart first, and how do you know when to stop?

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.

Prime number — A number bigger than 1 that you can only divide by 1 and itself.Número primo — Un número mayor que 1 que solo se puede dividir entre 1 y sí mismo. Composite number — A number bigger than 1 that you can divide by more than just 1 and itself.Número compuesto — Un número mayor que 1 que se puede dividir entre más números, no solo 1 y sí mismo. Prime factorization — Writing a number as prime numbers multiplied together.Factorización prima — Escribir un número como números primos multiplicados. Factor — A number that divides evenly into another number, with no remainder.Factor — Un número que divide exactamente a otro número, sin dejar residuo. Factor tree — A picture that splits a number into its prime numbers, step by step.Árbol de factores — Un dibujo que separa un número en sus números primos, paso a paso.

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.

I broke ___ into ___ because ___.Separé ___ en ___ porque ___.

3. Build Your Explanation

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

Claim: 60 is composite because it has more than two factors.

Evidence: Students say 60 is composite because it has more than two factors (it is divisible by numbers other than 1 and 60, such as 2, 3, 5, 6), so it can be broken down.

Reasoning: This evidence connects the definition of prime factorization to the mathematical claim.

Start

Most language support

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

I broke ___ into ___ because ___.Separé ___ en ___ porque ___.
I knew I was finished when every factor was ___.Supe que terminé cuando cada factor era ___.

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.