Write Algebraic Expressions
Name Period
Objectives / Objetivos
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.
Key Idea / Idea clave
Words like "each" or "per" mean multiply, and "plus" or "more than" mean add.
I Notice / Observo
- What value changes depending on how many people come?
- What stays the same no matter the number of tickets?
I Wonder / Me pregunto
- What if there were two different ticket prices — regular and VIP?
Vocabulary / Vocabulario
| Term / Término | Definition / Definición |
|---|---|
| Variable Variable | A letter that stands for a number that is unknown or can change. Una letra que representa un número desconocido o que puede cambiar. |
| Algebraic Expression Expresión algebraica | A math phrase that has at least one letter. Una frase matemática que tiene al menos una letra. |
| Coefficient Coeficiente | The number in front of a letter, like the 3 in 3x. El número frente a una letra, como el 3 en 3x. |
| Constant Constante | A fixed number in an expression or equation that does not change. Un número fijo en una expresión o ecuación que no cambia. |
| Like terms Términos semejantes | Terms with the same letter raised to the same power, like 2x and 5x. Términos con la misma letra elevada a la misma potencia, como 2x y 5x. |
Practice Preview / Vista previa de práctica
- Which expression represents 'the product of 6 and a number n'?
- 6n
- 6 + n
- n − 6
- n ÷ 6
- Match each word phrase to its correct algebraic expression.
- Match each word phrase to its algebraic expression.
- Find the Translation Error
- Step 1: Phrase — 12 less than a number g
- Step 2: Student's expression — 12 − g
- Step 3: Reasoning — I see 'less than' so I subtract, and 12 comes first in the phrase.
Which step has the mistake? Explain it and write the correct work.
Reflection / Reflexión
One thing I learned today / Una cosa que aprendí hoy: