Welcome to "Hatch Identity Sort", a 1st Grade Shapeattributes mission at the Challenger (stretch) level, staged in our space exploration scenario. The mission opens with a hands-on prompt: "Place 6 squares on the canvas. Even if some are TILTED or in different colors, they still belong to the same shape family." You'll reason about the numbers 6 across 3 guided steps.
Behind the space exploration story, this lesson is really about shapeattributes aligned to CCSS 1.G.A.1. Distinguish defining attributes (sides, vertices, closed) from non-defining attributes (color, size, orientation). The key strategy this mission asks you to internalise: Triangle = 3, Square/Rectangle = 4, Hexagon = 6, Circle = curved.
A general pattern to watch for in 1st Grade shapeattributes — illustrated with example numbers below, which may differ from this lesson's: Sorting shapes by color instead of by sides. Make a rule game: only sort by what you can COUNT (sides, vertices). Color is a decoration. If you get stuck on "Hatch Identity Sort", the adaptive Socratic hints below escalate from a gentle nudge to a worked-out strategy — the same way a one-on-one tutor would coach you through it.
Grade 1 · Shapeattributes
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Thinking Summary · 1
Mastered[object Object]
[Discovery] Place 6 squares on the canvas. Even if some are TILTED or in different colors, they still belong to the same shape family.
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Active StepPlace 6 squares on the canvas.
Everything you need to know about the Socratic experience.
Place 6 squares on the canvas. Even if some are TILTED or in different colors, they still belong to the same shape family. Hint: Pick "square" from the palette, then tap "+" exactly 6 times.
Which of these is a NON-defining attribute (does NOT change what shape it is)? If you get stuck, the adaptive hint is: Sides and closed corners DEFINE shape. Color, size, and tilt do NOT.
Challenger missions push beyond CCSS expectations with edge cases that surface deeper misconceptions. Within 1st Grade Shapeattributes, expect numbers in the corresponding range.
Believing a small triangle is "less" of a triangle than a big one. A triangle is defined by HAVING 3 sides, not by HOW LONG they are. Show 5 triangles of different sizes — all equally "triangles".
Comparing (Sorting and categorizing is the geometric cousin of comparing numbers.). Open /grade-1/comparing to start that topic's missions.
Yes. Every mission, handbook page, and topic hub is mapped to a specific CCSS code (visible in the page header). The curriculum follows the CCSS coherence map: Grade 1 number sense → Grade 3 multiplicative thinking → Grade 6 ratio reasoning, with each grade building strictly on the prior year's foundations.
Socratic teaching answers a question with a better question. Instead of "the answer is 12", the system asks "if you had 3 groups of 4, how could you skip-count?" The goal is to externalize the learner's reasoning so they hear themselves think. Every Inquiry AI hint follows this pattern: nudge → reframe → analogy → only then a worked example, in that order.
