September Β· Week 1 Β· Day 3 Β· School day 3
Day 3: Numbers That Never Repeat
Play with your child: Root Words: Geo
Todayβs goals
- Word study: Build new words with prefixes and suffixes L.8.4b
- Reading: Theme clues: what characters learn RL.8.2, RL.8.3
- Math: Irrational numbers and the square root of 2 8.NS.1, 8.NS.2
- Science: Reading the periodic table MS-PS1-1
Materials
- The Call of the Wild by Jack London (or similar)
- Periodic table (one per pair)
- Grid paper and rulers
- Calculators
- Root cards and prefix/suffix cards (re-, auto-, -ology, -ic)
- Sticky notes
Swaps in [brackets] are fine: a drawn 1-inch square on grid paper replaces a ruler for the square root of 2 demonstration.
The day, step by step
10β15 min Morning meeting SL.8.1
- Question of the day: Is a number like 0.333... messy or neat? Take a quick vote, then hear one reason from each side.
- Fluency warm-up: a student reads a paragraph from yesterday's short story aloud; the class listens for expression.
- Preview: today we meet numbers that never repeat, build bigger words, and read the periodic table like a map.
15β20 min Word study L.8.4b
- Review: a root carries the core meaning; prefixes come before and suffixes after. Show geo + logy = geology (study of the earth) and geo + graph + ic = geographic.
- Students combine cards to build and define six words: biology, geologic, autobiography, photographic, thermometer, geometric.
- Challenge: what does a word mean if it ends in -ology? Students list three -ology words they know (biology, geology, zoology) and guess two more.
- Write two sentences using a built word in each; share one aloud.
25β30 min Reading workshop RL.8.2, RL.8.3
The Call of the Wild by Jack London (or similar)
- Mini-lesson: theme clues often appear when a character learns something. Ask: what has Buck learned so far about the rules of his new life?
- Read the next section aloud (about 8 pages). Students jot on sticky notes every moment Buck learns a lesson, such as the law of club and fang.
- Chart the lessons. Ask: what might the author want us to understand about survival or change?
- Students draft a possible theme for the novel so far, labeled as a working theme they can revise.
- Independent reading: 10 minutes, noting one thing their own main character learns.
35β45 min Math 8.NS.1, 8.NS.2
- Draw a square with 1-inch sides on grid paper and its diagonal. Ask: how long is the diagonal? Measure (about 1.4 inches) and explain that the exact length is the square root of 2.
- Use calculators to show β2 = 1.41421356... Explain that mathematicians have proved these digits never end and never repeat, so β2 cannot be written as a fraction. It is irrational.
- Sort: β4, β9, β16 are rational (2, 3, 4). β2, β3, β5 are irrational. Students test β25, β10, β49, β50 and decide.
- Introduce pi as another irrational number: 3.14159..., the ratio of circumference to diameter that never repeats.
- Exit ticket: name one rational and one irrational number and say how you know.
Math center: perfect squares chart from 1Β² to 15Β², built by students on an index card.
25β30 min Science MS-PS1-1
- Periodic table scavenger hunt: in pairs, find the symbol and atomic number for oxygen, sodium, gold, neon and calcium. Note that symbols can come from Latin names (Au for gold).
- Explain the rows and columns: elements in a column share properties. Point out the noble gases on the far right and the metals on the left.
- Students pick one element and write three facts: symbol, atomic number, metal or nonmetal, and one place it is found or used.
- Discuss: why is the periodic table like a map? (It organizes by position and pattern.)
25β30 min Writing W.8.2, RL.8.2
- Teach the five-sentence objective summary: who or what, the main problem or idea, two key events or details, the outcome. No opinions.
- Model with yesterday's short story, writing the five sentences on the board and crossing out one opinion that sneaks in.
- Students write a five-sentence summary of the Call of the Wild chapters so far.
- Peer check: partners circle any opinion words (I think, boring, great) and the writer removes them.
20β30 min Centers and independent practice
- Perfect squares chart and estimating β20, β45 and β90 between two whole numbers.
- Element card: draw an atom model for your chosen element with the correct number of protons.
- Independent reading with a lesson-learned sticky note.
- Word building: make five words with -ology or -ic and define them.
Device time (15 min): play Root Words: Geo.
Todayβs game: Root Words: Geo
5β10 min Closing circle SL.8.1
- Finish this sentence: An irrational number is a number that...
- What has Buck learned that you think will matter later?
- Preview tomorrow: latitude, longitude and turning repeating decimals back into fractions.
Support: Let students use a calculator to see the decimals for every root they sort, and provide the perfect squares chart already filled in.
Stretch: Ask students to estimate β2 to the hundredths place by squaring 1.41 and 1.42 and explaining which is closer.
Look for: Students can explain that irrational numbers have decimals that never end or repeat and can give β2 and pi as examples.
Short day? Keep the β2 lesson and the read-aloud with theme clues; move the periodic table hunt to tomorrow's centers.