By Amy Rauen
Key positive factors:
- themes correlated to the 1st grade math curriculum
- Leveled textual content reviewed by way of a math curriculum advisor and a analyzing consultant
- attractive full-color photos and illustrations that help the textual content and relief comprehension
- Examples that relate math to real-world situations
Special good points:
- pictures and illustrations that help the textual content and construct math skills
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Additional resources for Adding and Subtracting in Math Club (Math in Our World)
Penny counts 22, 17, 39, and 28 flowers in each of four bunches of flowers. She decides to buy the bunch with a number that is closest to the mean. Write a math expression for the mean number of flowers. Which bunch should she buy? Answer: ______________________________________________________ ____________________________________________________ If you need to review, return to lesson 5 (page 23). Write Your Own Problem ✍ Choose a problem you liked from this unit. Write a similar problem using a situation and related facts from your own life.
4. GoDigital sells a software program to edit digital photos for $15 per month. The company also offers a one-month free trial to start. Alex calculates the mean cost per month over a one-year period, including the free trial. Circle the calculation that is correct. (15 × 12) 13 (15 × 11) 12 (15 × 12) 11 (15 × 13) 21 ✰ Challenge Problem You may want to talk this one over with a partner. The first full-automated software-driven computer, called “Baby,” first ran in 1948. It measured 16 feet long, 7 feet high, and 2 feet deep.
Clare makes a sack lunch for each of her two younger brothers and herself. 85. 50 a day. There are 180 school days in a year. How much money do Clare and her brothers save in one full school year by taking their lunches? Answer: ____________ 4. Gary and the children buy Gena a bread machine for her birthday. It costs $140. They estimate that 250 loaves will pay back the cost of the machine. 82 on a loaf of bread. Complete the equation with math symbols, and find the cost of the bread-machine per loaf.
Adding and Subtracting in Math Club (Math in Our World) by Amy Rauen