60 free levels
English · Story Woods
Bubble Grotto
Pop every bubble that matches the rule in a sunlit underwater grotto.
- Grades
- K–7
- Levels
- 144 in 6 tracks
- Free
- 60 levels
- Session
- 3–8 minutes
What it is
Shimmering bubbles rise past coral and swaying sea grass, each carrying a word, a number or a picture. Read or listen to the rule, then pop every bubble that matches it. A bubble that doesn't match just boings back and keeps floating, and bubbles that reach the top drift down again from below. There is no timer: bubbles slow down while you aim, and calm mode keeps them still.
What children learn
Rhymes, sight words, even and odd numbers, nouns, verbs and adjectives, solids, liquids and gases, and integers, from kindergarten to grade 7.
What it teaches
- Matter and its properties
- Sentence structure
- Odd and even numbers
- Operations with rational numbers
- Build and read words
- Integers on a number line
- Rhymes and syllables
How to play
Tap or click a bubble to pop it. Keyboard: arrow keys aim at the next bubble, Enter or Space pops, P pauses. Bubbles slow down while you aim, and calm mode keeps them still.
Plays with: Touch Mouse Keyboard
Accessibility
- Read-aloud on request
- Fully playable with a keyboard
- Calm mode with reduced motion
- No timers or time pressure
- Never relies on color alone
- Quiet mode turns off sound effects
Level maps
Tracks and levels
Each track is made for a grade range. Start anywhere that fits — you don't have to play the younger tracks first. As a guest, your stars are saved on this device.
Rhyme Pop
Pop the pictures that rhyme with the word on the card, from one rhyme to tricky look-alikes.
K–2
24 levels · 10 free
Rhyme Pop
Pop the pictures that rhyme with the word on the card, from one rhyme to tricky look-alikes. · K–2
- 1 Rhyme Ripples 1 ☆☆☆
- 2 Rhyme Ripples 2 ☆☆☆
- 3 Rhyme Ripples 3 ☆☆☆
- 4 Rhyme Ripples 4 ☆☆☆
- 5 Rhyme Ripples 5 ☆☆☆
- 6 Rhyme Ripples 6 ☆☆☆
- 7 Rhyme Pairs 1 ☆☆☆
- 8 Rhyme Pairs 2 ☆☆☆
- 9 Rhyme Pairs 3 ☆☆☆
- 10 Rhyme Pairs 4 ☆☆☆
- 11 Rhyme Pairs 5 Plan level
- 12 Rhyme Pairs 6 Plan level
- 13 Tricky Endings 1 Plan level
- 14 Tricky Endings 2 Plan level
- 15 Tricky Endings 3 Plan level
- 16 Tricky Endings 4 Plan level
- 17 Tricky Endings 5 Plan level
- 18 Tricky Endings 6 Plan level
- 19 Rhyme Reef 1 Plan level
- 20 Rhyme Reef 2 Plan level
- 21 Rhyme Reef 3 Plan level
- 22 Rhyme Reef 4 Plan level
- 23 Rhyme Reef 5 Plan level
- 24 Rhyme Reef 6 Plan level
Levels after 10 are part of a PlayOwl plan. Free levels, saving and basic reports stay free.
Sight Word Pop
Find common words like the, said and was among look-alike words, one, two and then three at a time.
K–2
24 levels · 10 free
Sight Word Pop
Find common words like the, said and was among look-alike words, one, two and then three at a time. · K–2
- 1 First Words 1 ☆☆☆
- 2 First Words 2 ☆☆☆
- 3 First Words 3 ☆☆☆
- 4 First Words 4 ☆☆☆
- 5 First Words 5 ☆☆☆
- 6 First Words 6 ☆☆☆
- 7 Look-Alike Lagoon 1 ☆☆☆
- 8 Look-Alike Lagoon 2 ☆☆☆
- 9 Look-Alike Lagoon 3 ☆☆☆
- 10 Look-Alike Lagoon 4 ☆☆☆
- 11 Look-Alike Lagoon 5 Plan level
- 12 Look-Alike Lagoon 6 Plan level
- 13 Word Pairs 1 Plan level
- 14 Word Pairs 2 Plan level
- 15 Word Pairs 3 Plan level
- 16 Word Pairs 4 Plan level
- 17 Word Pairs 5 Plan level
- 18 Word Pairs 6 Plan level
- 19 Word Wizards 1 Plan level
- 20 Word Wizards 2 Plan level
- 21 Word Wizards 3 Plan level
- 22 Word Wizards 4 Plan level
- 23 Word Wizards 5 Plan level
- 24 Word Wizards 6 Plan level
Levels after 10 are part of a PlayOwl plan. Free levels, saving and basic reports stay free.
Even and Odd
Pairs of pearls, even and odd numbers to 100, then even and odd sums.
1–2
24 levels · 10 free
Even and Odd
Pairs of pearls, even and odd numbers to 100, then even and odd sums. · 1–2
- 1 Pairs of Pearls 1 ☆☆☆
- 2 Pairs of Pearls 2 ☆☆☆
- 3 Pairs of Pearls 3 ☆☆☆
- 4 Pairs of Pearls 4 ☆☆☆
- 5 Pairs of Pearls 5 ☆☆☆
- 6 Pairs of Pearls 6 ☆☆☆
- 7 Even Tides 1 ☆☆☆
- 8 Even Tides 2 ☆☆☆
- 9 Even Tides 3 ☆☆☆
- 10 Even Tides 4 ☆☆☆
- 11 Even Tides 5 Plan level
- 12 Even Tides 6 Plan level
- 13 Big Number Bubbles 1 Plan level
- 14 Big Number Bubbles 2 Plan level
- 15 Big Number Bubbles 3 Plan level
- 16 Big Number Bubbles 4 Plan level
- 17 Big Number Bubbles 5 Plan level
- 18 Big Number Bubbles 6 Plan level
- 19 Sum Splash 1 Plan level
- 20 Sum Splash 2 Plan level
- 21 Sum Splash 3 Plan level
- 22 Sum Splash 4 Plan level
- 23 Sum Splash 5 Plan level
- 24 Sum Splash 6 Plan level
Levels after 10 are part of a PlayOwl plan. Free levels, saving and basic reports stay free.
Noun, Verb, Adjective
Pop the nouns, verbs or adjectives, first from word lists, then inside real sentences.
2–4
24 levels · 10 free
Noun, Verb, Adjective
Pop the nouns, verbs or adjectives, first from word lists, then inside real sentences. · 2–4
- 1 Noun Nursery 1 ☆☆☆
- 2 Noun Nursery 2 ☆☆☆
- 3 Noun Nursery 3 ☆☆☆
- 4 Noun Nursery 4 ☆☆☆
- 5 Noun Nursery 5 ☆☆☆
- 6 Noun Nursery 6 ☆☆☆
- 7 Action and Describing 1 ☆☆☆
- 8 Action and Describing 2 ☆☆☆
- 9 Action and Describing 3 ☆☆☆
- 10 Action and Describing 4 ☆☆☆
- 11 Action and Describing 5 Plan level
- 12 Action and Describing 6 Plan level
- 13 Word Explorer 1 Plan level
- 14 Word Explorer 2 Plan level
- 15 Word Explorer 3 Plan level
- 16 Word Explorer 4 Plan level
- 17 Word Explorer 5 Plan level
- 18 Word Explorer 6 Plan level
- 19 Sentence Splash 1 Plan level
- 20 Sentence Splash 2 Plan level
- 21 Sentence Splash 3 Plan level
- 22 Sentence Splash 4 Plan level
- 23 Sentence Splash 5 Plan level
- 24 Sentence Splash 6 Plan level
Levels after 10 are part of a PlayOwl plan. Free levels, saving and basic reports stay free.
Solid, Liquid, Gas
Sort solids, liquids and gases, then melting, freezing and boiling.
2–4
24 levels · 10 free
Solid, Liquid, Gas
Sort solids, liquids and gases, then melting, freezing and boiling. · 2–4
- 1 Solid or Liquid? 1 ☆☆☆
- 2 Solid or Liquid? 2 ☆☆☆
- 3 Solid or Liquid? 3 ☆☆☆
- 4 Solid or Liquid? 4 ☆☆☆
- 5 Solid or Liquid? 5 ☆☆☆
- 6 Solid or Liquid? 6 ☆☆☆
- 7 Into Thin Air 1 ☆☆☆
- 8 Into Thin Air 2 ☆☆☆
- 9 Into Thin Air 3 ☆☆☆
- 10 Into Thin Air 4 ☆☆☆
- 11 Into Thin Air 5 Plan level
- 12 Into Thin Air 6 Plan level
- 13 Shape Shifters 1 Plan level
- 14 Shape Shifters 2 Plan level
- 15 Shape Shifters 3 Plan level
- 16 Shape Shifters 4 Plan level
- 17 Shape Shifters 5 Plan level
- 18 Shape Shifters 6 Plan level
- 19 Melt, Freeze, Boil 1 Plan level
- 20 Melt, Freeze, Boil 2 Plan level
- 21 Melt, Freeze, Boil 3 Plan level
- 22 Melt, Freeze, Boil 4 Plan level
- 23 Melt, Freeze, Boil 5 Plan level
- 24 Melt, Freeze, Boil 6 Plan level
Levels after 10 are part of a PlayOwl plan. Free levels, saving and basic reports stay free.
Integer Reef
Negative numbers, ordering integers, distance from zero, then adding and subtracting integers.
6–7
24 levels · 10 free
Integer Reef
Negative numbers, ordering integers, distance from zero, then adding and subtracting integers. · 6–7
- 1 Below Zero 1 ☆☆☆
- 2 Below Zero 2 ☆☆☆
- 3 Below Zero 3 ☆☆☆
- 4 Below Zero 4 ☆☆☆
- 5 Below Zero 5 ☆☆☆
- 6 Below Zero 6 ☆☆☆
- 7 Deep Water Order 1 ☆☆☆
- 8 Deep Water Order 2 ☆☆☆
- 9 Deep Water Order 3 ☆☆☆
- 10 Deep Water Order 4 ☆☆☆
- 11 Deep Water Order 5 Plan level
- 12 Deep Water Order 6 Plan level
- 13 Distance from Zero 1 Plan level
- 14 Distance from Zero 2 Plan level
- 15 Distance from Zero 3 Plan level
- 16 Distance from Zero 4 Plan level
- 17 Distance from Zero 5 Plan level
- 18 Distance from Zero 6 Plan level
- 19 Integer Currents 1 Plan level
- 20 Integer Currents 2 Plan level
- 21 Integer Currents 3 Plan level
- 22 Integer Currents 4 Plan level
- 23 Integer Currents 5 Plan level
- 24 Integer Currents 6 Plan level
Levels after 10 are part of a PlayOwl plan. Free levels, saving and basic reports stay free.
Keep exploring
Part of these collections
Guides for grown-ups
- Phonics for kids: what it is and how to practice it at homeA guide for parents · 7 min read
- What are sight words, and how do you teach them so they stick?A guide for parents and teachers · 7 min read
Reading games by grade
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