Operation Quest
Warm up with addition within 50 across five rooms
Ages 9–10
Connect fractions and decimals, work through mixed-number addition and subtraction, and explore angles and area. Pick a focused browser activity for practice at school or at home.
Pick the task the learner needs next: connect fractions and decimals, work through mixed numbers, identify a pictured angle, or reason about area.
Match familiar fractions and decimals, then identify a decimal on a number line. Some questions use eighths and thousandths as an extension.
Play Decimal DiscoveryStart with an example using like denominators. Check each step with whole fraction bars; unlike-denominator problems provide a later extension.
Practice Mixed Numbers Step by StepLook at the two rays and choose the angle’s degree measure from the answer options. Compare the opening with a right angle before choosing.
Open Angle Measure LabChoose rectangles whose side lengths give the target area. Explain the product of the two lengths in square units.
Play Area Tile MatchUse the game descriptions to choose a suitable starting task. For mixed numbers, work through a like-denominator example before trying an extension. After playing, ask the learner to draw a model or explain one answer; the collection is a selection of practice activities, not a full curriculum.
Warm up with addition within 50 across five rooms
Match fractions and decimals, then read positions on a number line
Start with like-denominator mixed numbers and check each step with fraction bars
Turn a ray to the target degree value; includes reflex-angle extension
Identify the pictured angle and choose its degree measure
Choose rectangles with the target area in square units
For fractions and decimals, start with Decimal Discovery. Match common fractions to decimals, reverse the conversion, and identify decimal positions on a number line. The activity includes tenths, quarters, fifths, and eighths.
For mixed-number addition and subtraction, use Mixed Number Addition & Subtraction. Start with like denominators, follow the checked steps, and use the fraction bars to explain whole and fractional parts. Move to unlike denominators when the student is ready.
For angles, choose Angle Measure Lab to identify a pictured angle and select its degree measure. Angle Dial asks students to turn a ray to a target degree value and also includes reflex angles as an extension.
For area, use Area Tile Match to select rectangles with the target number of square units. Compare rectangles with different side lengths that have the same area. Operation Quest is a short addition warm-up for students who want to review earlier skills.
Choose one task for a short classroom or home session, then ask the student to explain a conversion, calculation, or measurement. These activities offer focused practice rather than a complete fourth grade course.
This collection includes review, current practice and extension tasks. Read each game description and choose according to the learner’s existing skills. Some activities draw on other grade levels; the collection does not cover an entire grade curriculum.
Browse the key Grade 4 game links grouped by skill.