6.GR.4 Lesson 5-7-part2 Apply Day · Set B
MASTERY CHECK
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5.7 · Part II

Second Practice Form · Independent Application and Spiral Review

Surface Area of Prisms · Surface area

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Name: Date: Period: Learning Goal:
■ ADVANCED CONCEPT ANCHOR: 5.7 · Part II
1Surface Area of Prisms
2The Structural Procedure
  1. Calculate area of Top & Bottom: 2 × (l · w)
  2. Calculate area of Front & Back: 2 × (l · h)
  3. Calculate area of Left & Right: 2 × (w · h), then sum all three pairs
3Mathematical Word Bank
  • Surface Area of Prisms (Área de superficie de prismas) — The total area of all bases and lateral faces of a prism. Formula: SA = 2B + lateral area.
  • Surface area (Área de superficie) — The total area of all the flat sides of a solid.
  • Rectangular prism (Prisma rectangular) — A solid box shape with six flat rectangle sides.
  • Triangular prism (Prisma triangular) — A solid with two triangle ends and three flat rectangle sides.
  • Face (Cara) — One flat side of a solid shape.
  • Net (Plantilla (desarrollo plano)) — A flat shape that folds up into a solid.
4Watch out
  • A common mistake in Surface Area of Prisms is confusing surface area with volume — multiplying l × w × h (which finds the space INSIDE the prism, in cubic units) instead of adding the areas of all the faces (SA = 2lw + 2lh + 2wh, in square units). A second common slip is forgetting to double one face pair, like writing 2(l×w) + 2(l×h) + (w×h) instead of + 2(w×h) — always count all 6 faces (or all 5 for a triangular prism) before you submit.
  1. 1 MULTIPLE CHOICE

    A rectangular prism measures 6 cm long, 4 cm wide, and 2 cm tall. What is its surface area?

    1. A88 square centimeters
    2. B48 square centimeters
    3. C24 square centimeters
    4. D44 square centimeters
    Formula
    Put the numbers in
    Work it out
    Answer with its unit
  2. 2 MULTIPLE CHOICE

    What is the surface area of a rectangular prism with l = 5 cm, w = 4 cm, h = 3 cm?

    1. A94 cm²
    2. B60 cm²
    3. C94 cm³
    4. D47 cm²
    Formula
    Put the numbers in
    Work it out
    Answer with its unit
  3. 3 MULTIPLE CHOICE

    How many faces does a triangular prism have?

    1. A5
    2. B4
    3. C6
    4. D3
    ✏️ Workspace & Solution Steps
  4. 4 MULTIPLE CHOICE

    A triangular prism has two triangular bases each with area 12 cm² and three rectangular faces with areas 30 cm², 40 cm², and 40 cm². What is the total surface area?

    1. A134 cm²
    2. B110 cm²
    3. C122 cm²
    4. D134 cm³
    Formula
    Put the numbers in
    Work it out
    Answer with its unit
📐 CER MATHEMATICAL PROOF MATRIX (CER 2.0) SMP.3 / Proof & Justification

Writing Task: Justify why your mathematical solution is accurate and complete.

C Claim
State your direct mathematical answer/claim with units.
E Evidence
Cite exact numbers, calculations, dimensions, or graph data.
R Reasoning
Explain the mathematical theorem, property, or definition connecting evidence to claim.
Student Mastery Self-Assessment:
1 · Need More Support
2 · Getting Closer
3 · Got It / Solid
4 · Master / Can Teach It