Problems

Here's a basic chart showing what's where in this long list of problems. There are two fully detailed lists in the User Guide:  SDS Topics in Alphabetical Order and SDS Topics in Numerical Order.

TopicStella Number
Visual Problems1000 – 1170
Logical Deduction1180 – 1290, 3750
Arithmetic1300 – 2022
Symbol Manipulation2030 – 2390, 2745, 4100
Algebra Problems2400 – 2500
Analytic Geometry2750 – 2840, 3680 – 3723
Informal Geometry3000 – 3080
Euclidean Geometry3100 – 3650, 3750 – 3850
Trigonometry4000 – 4340
Probability4400 – 4420

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 Set: AllIntroductory ProblemsProblem Set 1Problem Set 2Problem Set 3Problem Set 4Problem Set 5Problem Set 6Problem Set 7Problem Set 8Problem Set 9Problem Set 10Problem Set 11Problem Set 12Problem Set 13Problem Set 14Problem Set 15Problem Set 16Problem Set 17Problem Set 18Problem Set 99 Course: AllPre-AlgebraAlgebra IGeometryAlgebra/TrigonometryPre-Calculus Math Topic: AllVisualLogicArithmetic: ZArithmetic: Q & RAlgebra PrepAlgebraSymbol-PushingGeometry-InformalGeometry-EuclideanGeometry-AnalyticalTrigonometryPre-CalculusCalculator
Stella NumberProblem Title
1010.11Squares in a Square
1020.15A Triangle with Given Midpoints
1020.23Vacation on a Triangular Island
1020.42Overlapping Squares
1020.44Dividing the Yin and the Yang
2070.43Big and Little Cubes
2210.41Distance on the Number Line
2761.11A Sum of Slopes
3070.12A Supplement/Complement Conjecture
3150.11Calculating an Angle
3155.21Jasmine and Biscuit
3155.22A Triangular Garden
3155.41A Mystery Angle
3155.51A Narrow Sinister Alley
3160.11Triangle ABC is Isosceles
3232.11Triangle-ing
3305.11Diagonals of Two Regular Polygons
3305.52Stop Sign
3310.11Sum of Interior Angles
3310.19A Pentangle
3320.11A Ratio of Areas
3320.21A Square Inside a Circle Inside a Square
3350.11Overlapping Parallelograms
3360.11Mystery Trapezoid
3410.32Squares Make An Octagon
3420.22The Area of a Cross
3420.24Three Equilateral Triangles
3420.25The Sum of Two Triangles
3420.26Area of a Hexagon
3420.27Triangle Area
3420.29Midline Triangle
3420.41Dance of the Area Bisectors
3420.43Regular Triangle, Regular Hexagon
3420.61Two Triangles and a Square
3420.71Hard Triangle Area
3420.73Crazy Baseball Diamond
3420.81Intersecting Medians
3440.12Billy the Goat
3440.13A Girl and Her Dog
3440.31A Lovely Circular Lawn
3440.41First: Trisect the Diameter
3440.43Fencing Inside a Circular Field
3440.51Fraction of a Circular Area
3450.21Tetrahedron Inscribed in a Cube
3470.14Square with Internal Segments
3470.21Distance in flight
3470.32Cardboard Box
3470.51A Triangle in a Circle
3470.61Barber Pole
3500.21Midpoint of a Chord?
3500.31Circle Around Three Squares
3500.41Water Pipes Stack
3500.51Gertrude the Goldfish
3500.61Three Circular Disks
3500.63Four Tangent Circles
3510.12Parallelogram?
3510.13Is It a Parallelogram?
3550.11LP Phonograph Record
3550.23Our Whirling, Twirling, Swirling World
3550.44Walking the Equator
3550.51A Wheel Within A Wheel
3560.11Intersecting Chords
3580.11Trapezoid
3580.13Two Equilateral Triangles
3580.14Akashi-Kaikyo Bridge
3580.15Estimating Height
3580.17Similarity Exercise
3580.21All Angles
3590.11Parallelogram and a Geometric Mean
3615.51Parallelepiped