math.gK.f.lesson_14
2D shapes — hexagon and oval, plus shape hunt
- Students can name the hexagon (6 sides) and oval (closed curve, elongated).
- Students can identify 2D shapes in real-world objects through a classroom shape hunt.
Lesson plan
Warm-up
5 minReview: teacher shows shapes from yesterday in random order and rotations; class names them.
- Affirm correct names; gently rename for rotated-square 'diamond' errors.
- Introduce hexagon and oval: 'two new friends today.'
Direct instruction
8 minHEXAGON — six sides. Like a honeycomb cell or a stop sign (almost — stop signs are OCTAGONS, 8 sides — but hexagon is the cousin). OVAL — like a stretched circle, no corners, but not round. Like an egg.
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6 sides + 6 corners = HEXAGON.model Class counts 1, 2, 3, 4, 5, 6 — touching each side.prompt Hold up yellow pattern-block hexagon. 'Count the sides together.'
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Oval is like a circle that got stretched.model '0 corners! Curved! But stretched — not round.'prompt Hold up oval felt. 'Sides? Corners?'
- How many sides does a hexagon have? (6)
- Is an oval the same as a circle? (no — oval is stretched, circle is round)
M-K-F-GM-14-A
Photograph
Four-panel photo collage: (top-left) honeycomb close-up showing perfect hexagons; (top-right) yellow pattern-block hexagon on white background; (bottom-left) soccer ball showing black hexagon panels; (bottom-right) hexagonal floor tile pattern. Each labeled '6 sides, 6 corners — HEXAGON' in 18-pt text. Used to anchor real-world recognition.
Guided practice
7 min-
Classroom shape hunt: children walk in pairs with clipboards; find and tally 1 example each of circle, square, triangle, rectangle, hexagon, oval in the classroom or hallway.scaffold Pre-printed clipboard with shape outlines and a tally column.
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Pairs report out: 'I found a hexagon — it was ___.'
M-K-F-GM-14-B
Chart
Clipboard worksheet 8.5"x11" titled 'SHAPE HUNT.' Six rows, one per shape (circle, square, triangle, rectangle, hexagon, oval). Each row has: (left) outline of the shape, (center) word, (right) 5 empty boxes for tally marks. Tally each example found in the classroom. Pencil column at right for child's name.
Formative assessment
2 min- Teacher holds up hexagon and oval; child names each.
Closure
- Class chant adds: 'Hexagon 6 / Oval 0 — round but stretched out!'
- Preview: 'Tomorrow we meet SOLID shapes — like a ball, a box, an ice-cream cone!'
Homework
5 min- Look for a hexagon in your neighborhood (honeycomb, soccer ball, sign, tile). Draw it.
Exercises in this lesson
Differentiation
- Larger-format hexagon for vertex counting
- Side-by-side oval and circle for direct contrast
- Introduce octagon (stop sign — 8 sides)
- Identify pentagon (5 sides) on a chart
- Bilingual shape cards
- Real-world photo + word card for hexagon and oval
- Tactile-edge felt shape with raised vertices for counting
- Reduce to one new shape (hexagon only)
Teacher notes
The shape hunt is the engagement engine — children get up, move, and find. The real-world recognition is the hardest part of shape work at K (NCTM PreK-2): a window is a rectangle, a clock face is a circle, a slice of pizza is a triangle. The hexagon is genuinely uncommon in real classrooms — soccer balls and honeycomb photos provide the anchor. Be ready for 'is a hexagon a polygon?' from precocious kids — answer 'yes, polygons are shapes with straight sides; you'll learn more in Grade 1.'