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LAUNCH
two LAUNCH types
Daily Launch Lesson/Unit Launch;
BOOSTThe Leopards professional Dodge ball team is running a promotion to attract fans to their Dodge ball games. The first 500 people in attendance will receive either a mini-Dodge ball with the Leopards logo or a Leopards t-shirt. The mini-Dodge balls will cost the team 2.50 each and the t-shirts will cost the team 1.75 each. If the team plans to give away 500 items total and they can only spend $965; how many of each item will the team give away?
Tips for finding or creating good launch tasks.
Think about what prior knowledge you want to bring in from previous learning.
Think about what new knowledge will be presented in the up coming unit.
Search for tasks that encourage the desired recall of knowledge, but also lend themselves to the new content that will be introduced.
One of the best ways to create launch tasks is to find a problem on the internet or in the text book, and then remove any scaffolding or guiding instructions that may be present.
Curriculum Text Example*
Core-Plus Contemporary Mathematics in Context: Course 1 , Unit 7 quadratics. P. 492-493
Using just the preliminary portion of the problem, removing the linear function
that has been given to represent number of tickets sold, and removing the guided questioning that follows; we can create a
good launch problem that encourages the students to really think about the
situation before jumping into the broken down version of the problem.
When the freshman class officers at Sturgis High School were making plans for the annual end-of-year class party,
they had a number of variables to consider…
* the number of students purchasing tickets and attending the party
* the price charged for tickets
*expenses, including food, a DJ, security, and clean-up
A survey of class members showed that the number of students attending the party would depend on the price charged for tickets.
Survey data suggested that if the party were free all 200 of the freshman would attend; however, for every $1 increase in price
approximately 10 students would choose not to attend.
* The students responsible for pricing food estimated an expense of $5 per student.
* The students responsible for getting a DJ reported that the person they wanted would charge $150 for the event.
* The school principal said that costs of security and clean-up by school crews would add another $100
to the cost of the party.
If this party is to be a fundraising event for the class, what price should be set in order to raise the most money?
If this party is to promote camaraderie among the class, what price should be set in order to throw the party without losing money?
The Brown family went on a camping trip. Their campsite was located 3 miles east and 7 miles
north of the ranger station. As the clouds rolled in, they decided their campsite was located too close
to the river, which flows directly west to east-8 miles north of the ranger station, so they moved to a new site. The new campsite was located 7 miles east and 2 miles south of the ranger station. How far did they have to move their campsite to avoid
the possible flooding river?
LAUNCH
SUPERBOOST
The family decided that to save energy from walking back and forth the entire
distance they could create a pass-off point halfway
between the two campsites and only carry their
equipment halfway then pass it off to another member of
their party to carry the rest of the way. Where would the pass off point be located?
The Smith family was also camping along the river 2 miles due west of the Brown family campsite. They
also decided to move their campsite to avoid the rising river; in order to maintain their distance from the Brown family and move sufficiently up hill, they needed to move in a path that was parallel to the Brown’s and just as far. Where
will the Smith family’s new campsite located?
ATTEND TO MATHEMATICAL PRACTICES
1. Make sense of the problem and persevere
2. Reason abstractly and quantitatively
3. Construct viable arguments and critique others
4. Model with Mathematics
5. Use appropriate
tools
6. Attend to precision
7. Look for and make use of
structure
8. Look for and express regularity in repeated reasoning
