Decimal Numbers and Percentages 02 – Foundational Math

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⚠️ This adapted Mathematics activity was designed to teach Decimal Numbers and Percentages to students who are in the process of learning to read and write, using large illustrations, everyday examples, and clear instructions.

Number of questions in the activity:

4 adapted questions + complete answer key, distributed across 2 activity pages, including an introductory visual summary.

The sequence begins by recognizing decimal quantities, progresses to subtracting monetary values, and concludes with interpreting and representing percentages.

Target audience:

Especially suitable for students who are in the process of learning to read and write, and can be used in Elementary School, Middle School, and High School, depending on the student's curricular adaptation needs.

It may be particularly helpful for students with:

• Mild to moderate Intellectual Disabilities who need concrete examples and visual support.

• Dyscalculia who may experience difficulties understanding quantities and mathematical operations.

• Reading, writing, and mathematical abstraction difficulties who benefit from visual representations and structured activities.

The material can also support Mathematics and Specialized Educational Support (AEE) teachers.

Format:

Ready-to-print PDF containing:

🔹 4 adapted questions and a complete answer key; 🔹 2 activity pages, including an introductory visual summary; 🔹 illustrated examples featuring pizzas, pens, a video game health bar, and chocolate; 🔹 multiple-choice, subtraction, and tracing activities; 🔹 short instructions and answers selected by marking; 🔹 versions with standard lettering and UPPERCASE lettering; 🔹 black-and-white version; 🔹 BNCC-related skills.

⏱️ Save approximately 2 hours and 25 minutes of preparation time! The material is already adapted, illustrated, formatted, and accompanied by a complete answer key, reducing the time needed to develop activities and organize visual resources.

Content covered:

1. Decimal numbers: Recognizing a quantity consisting of one whole pizza and half of another pizza, represented by 1.50.

2. Monetary system: Calculating the difference between R$ 9.50 and R$ 8.50.

3. Percentages in games: Identifying 75% on a partially filled health bar.

4. Representing 50%: Identifying half of a chocolate bar.

The introductory summary presents the relationships 1.0 = 100%, 0.5 = 50%, and 0.25 = 25%, using pizza illustrations to support understanding of parts of a whole.

Important information for teachers:

The activity organizes learning through a progressive sequence, beginning with visually represented quantities and gradually introducing mathematical operations and percentages.

In the first question, students observe one whole pizza and half of another, identifying that the total quantity corresponds to 1.50. The visual representation helps students understand decimal numbers greater than one whole.

In the second question, students compare two pens priced at R$ 8.50 and R$ 9.50 and identify the difference of R$ 1.00. The calculation is already structured, allowing students to focus on the subtraction operation.

In the third question, students observe a video game health bar and recognize that the pink section represents 75% of the total. This resource connects percentages to a visual representation commonly found in digital gaming experiences.

In the fourth question, students use a chocolate bar to identify 50%, tracing the line that divides the figure into two equal halves.

The introductory visual summary can be consulted while completing the questions, helping students review concepts and reducing reliance on memorization.

Key features:

✅ Introductory visual summary: Connects decimal numbers, fractions of a whole, and percentages.

✅ Contextualized Mathematics: Pizzas, prices, and situations familiar to students.

✅ Video game elements: A health bar used to represent 75%.

✅ Progressive learning sequence: Recognizing quantities, performing calculations, and understanding percentages.

✅ Minimal writing requirements: Students respond through selecting answers, filling in values, and tracing.

✅ Accessibility: Available in UPPERCASE and black-and-white versions, with a complete answer key.