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Tell time to the nearest minute
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Practice telling time using analog clocks. Some clocks do not have labels.
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Telling time word problems
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Solve a word problem to find the duration of an event. Both analog or digital clocks are included. Time in the word problems crosses over the hour.
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US customary conversion word problems
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Practice US customary length, volume, and mass problems that require expressing measurements given in a larger unit in terms of a smaller unit.
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Time differences
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Practice finding the difference between times given on two analog clocks. Time differences cross over the hour.
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Touching point
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Confirm your understanding of the construction
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Transformation puzzles 1
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Transformation puzzles 2
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Transformation puzzles 3
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Understanding rotation of arbitrary points
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Understand how we can derive a formula for the rotation of any point around the origin.
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Skill check: Using limits
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Check your understanding of limits in the contexts of continuity, asymptotes, and the squeeze theorem
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Volume of cones
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Practice applying the volume formulas for cones.
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Volume of spheres
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Practice applying the volume formulas for spheres.
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Weighted average intuition
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First let's make sure you are comfortable with this construction.
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Weighted averages
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Calculate what weighting used in a weighted average of two points.
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Weighted subdivision
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Understanding what happens in subdivision with different weights
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Weighted average of three points
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Now it's your turn to prove you can calculate the weighted average. Later on we can let the computer do these calculations for us (phew!)
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Write fractions as whole numbers
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Represent fractions as whole numbers and whole numbers as fractions.
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Zeros of polynomials challenge problems
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Solve some more challenging problems that involve reasoning about the zeros of polynomials.
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Equivalent fraction models
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Identify and create equivalent fractions using visual models.
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Create rectangles with a given area
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Practice finding the area of rectangles by counting unit square. Create rectangles with a given area by covering unit squares.
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