Five warm-ups for grades 6–8. Each takes three to five minutes. Answers and teacher notes are in the collapsed box under each prompt.
ELA
Noah Webster, born on October 16, 1758, wrote a famous American dictionary and pushed for spellings that were different from British ones. Rewrite each British spelling the American way. Then answer: why might a writer in a brand-new country want its own way of spelling?
- colour
- honour
- labour
- centre
- theatre
Answer and teacher notes
1. color 2. honor 3. labor 4. center 5. theater. Two patterns: -our becomes -or, and -re becomes -er.
Answers to the question will vary. Strong ideas: simpler spellings that match how words sound, and a sense of national identity separate from Britain after independence. Webster’s American Dictionary of the English Language came out in 1828 in two volumes and included about 12,000 words that had never appeared in a dictionary before. Quick math: he was born 2026 − 1758 = 268 years ago today. Extension: can students think of a word that is spelled differently in British books or games they’ve seen?
Source: Britannica: Noah Webster
Math
A rectangular community garden plot is 12 feet long and 8 feet wide.
- Find the area and the perimeter.
- Fencing costs $3 per foot. How much does it cost to fence the whole plot?
- Each tomato plant needs 4 square feet. How many plants fit?
- A square plot uses the same amount of fencing. Which plot has more growing space?
Answer and teacher notes
1. Area = 12 × 8 = 96 square feet. Perimeter = 2 × (12 + 8) = 40 feet.
2. 40 × $3 = $120.
3. 96 ÷ 4 = 24 plants.
4. 40 feet of fencing makes a square with 40 ÷ 4 = 10-foot sides. Area = 10 × 10 = 100 square feet, so the square plot has 4 more square feet.
Common mistake: mixing up units. Perimeter is a length (feet), and area is a count of squares (square feet). Extension: for a fixed perimeter, the closer a rectangle is to a square, the more area it has. Have students test a 15 × 5 plot (still 40 feet around, but only 75 square feet).
Science
In the food chain grass → grasshopper → mouse → snake → hawk, only about 10 percent of the energy at one level is passed to the next. If the grass captures 10,000 units of energy from sunlight, how many units reach each animal? Then explain why there are far fewer hawks than grasshoppers in a field.
Answer and teacher notes
Grass 10,000 → grasshopper 1,000 → mouse 100 → snake 10 → hawk 1. Check: 10,000 × 0.1 × 0.1 × 0.1 × 0.1 = 1.
So little energy reaches the top of the chain that it can only support a few large predators. The other 90 percent at each step is mostly released as heat during respiration, leaves the body as waste, or stays in plants and animals that die without being eaten. Follow-up: why do food chains rarely have more than four or five links?
Source: National Geographic Education: Energy Flow and the 10% Rule
Social Studies
Today is World Food Day. It marks the day the United Nations’ Food and Agriculture Organization (FAO) was created, on October 16, 1945, shortly after World War II ended. (a) How many years ago was that? (b) Why would countries decide to work together on food right after a world war? (c) Name two things that could make it hard for a country to grow enough food.
Answer and teacher notes
(a) 2026 − 1945 = 81 years.
(b) The war had damaged farms, roads, and trade, and many people faced hunger and malnutrition. Food problems cross borders, so sharing knowledge, seeds, and supplies works better than each country acting alone. (c) Answers will vary: drought or floods, poor soil, crop diseases or pests, little farmland, lack of water for irrigation, or trouble moving food to markets. Connect to geography: ask how climate and landforms shape what a region can grow.
Source: United Nations: World Food Day
Current Events
NASA reported this week that satellites are tracking a strong El Niño, a natural pattern that brings warmer-than-normal water to parts of the equatorial Pacific Ocean every few years. In the eastern Pacific, the surface water is about 1.7 °C (3 °F) warmer than average. In some places the warm water has raised sea level by as much as 40 centimeters, while near Indonesia sea level is about 20 centimeters lower than normal. (a) What is the difference between 40 cm above normal and 20 cm below normal? (b) Why would warmer water make the sea surface higher?
Answer and teacher notes
(a) 40 − (−20) = 40 + 20 = 60 centimeters, about 2 feet. A number line helps students see why subtracting a negative means adding.
(b) Water expands when it warms, so the same amount of water takes up more space and the surface rises. That is why satellites that measure ocean height can spot El Niño. Bonus detail: the equatorial Pacific has also turned bluer, because tiny plants called phytoplankton grow best in cool, nutrient-rich water and have declined. Follow-up: why might a change in Pacific water affect weather far away?
Keep going
More bell ringers: Bell ringers for middle school · Math bell ringers · Science bell ringers · Social studies bell ringers · Grammar bell ringers · 100 bell ringer questions
End of class: Exit tickets for middle school · Math exit tickets · ELA exit tickets · Science exit tickets · Social studies exit tickets · Printable exit slips
Tools: Printable bell ringer sheet · Free AI bell ringer creator