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Discover Dairy: Selective Breeding

📖 Standards

CCSS.ELA-LITERACY.RST.6-8.7 Integrate quantitative or technical information expressed in words in a text with a version of that information expressed visually (e.g., in a flowchart, diagram, model, graph, or table).

CCSS.ELA-LITERACY.RST.6-8.1 Cite specific textual evidence to support analysis of science and technical texts.

📲 Technology Required

Computer with projector, for in-class use. Computer or tablet with Internet access for home use.

⏰ Time

60-70 minutes

📃 Summary

This cross-curricular lesson is one of two “lessons we love” from Discover Dairy. Students watch a short video, read a passage on selective breeding in dairy cows, have a discussion and complete a lab exercise in selective breeding.

Lesson

NOTE: While we create most lessons on the Growing Math site ourselves, we do include links to other lessons that are exemplary in their cross-curricular, standards-based design. This is one of two lessons we love from Discover Dairy. The entire 14-page lesson can be downloaded here, including reading passages, lab assignments and answer keys.

You can also go to the Discover Dairy site, which requires a free registration and login to download individual parts of the lesson and see the other lessons they have available.

Start with a video

Watch a four-minute video on dairy farms to kick the lesson off.

Read a passage on selective breeding in dairy cows

You’ll find this on page 13 of the handout linked above or download both reading assignments here (it’s only two pages) or copy the link to assign in your Google classroom to read on line.

Class Discussion on Selective Breeding

See page 2 of the full lesson linked above for suggested discussion questions. Note that the first question asks about the 7 types of dairy cows- the 7 types of cows are picture on the complete lesson plan on page 7.

Lab Exercise #1 : Selective Breeding

Pass out the lab activity #1 sheets, in pages 9 and 10 of the complete lesson plan. You can link directly to those here, if you want to assign in Google classroom or other management system. Note that link includes both labs 1 and 2.

Once students have the materials, explain the lab activity. You may want to use the explanation given on pages 2-3 of the lesson plan.

Answer keys for both lab exercises can be found here.

Not a dairy cow
Bovine, but not a dairy cow

Read a passage on the life cycle of a dairy cow

You’ll find this on pages 14 of the handout linked above or download both reading assignments here (it’s only two pages) or copy the link to assign in your Google classroom to read on line.

Answer keys for both lab exercises can be found here.

ASSESSMENT

Two types of assessment occur in this lesson. During the class discussion, teachers can get an assessment of the understanding of the concepts of the class as a whole and the lab assignment can be used for individual assessment.

Related Lesson

Discover Dairy: Life Cycle of the Dairy Cow

The Navajo-Churro: America’s First Domestic Sheep

📖STANDARD

CCSS.ELA-LITERACY.RH.6-8.2 Determine the central ideas or information of a primary or secondary source; provide an accurate summary of the source distinct from prior knowledge or opinions.

7th-8th Diné History Standards – I will understand historical/factual events, people and symbols that influence my family. Concept 1.PO2.  I will identify an event relating to important people in Diné history.

LESSON TIME

90 minutes including time for research

📃SUMMARY

Vocabulary and historical events key to Navajo sheep farming are provided in a slide presentation. Students learn more about Navajo agriculture and history through a video, their own research, and a game combining math and history. Academic vocabulary is at the 7th grade level.

📚Lesson

Navajo-Churros: America’s First Domestic Sheep

Introduce sheep farming in Navajo and southwest history with this presentation, for an editable Google slides version, go here. The same presentation as a PowerPoint is found here. Students will learn vocabulary words related to general livestock farming and specifically to sheep.

VIDEO: Irene’s Churro Lambs

YouTube video: Irene’s Churro Lambs

Research and Writing Assignments

This assignment has two parts. In the first part, students research one of these events in history to learn more about it. They locate a primary source and a secondary source with citations, and then write an objective summary. In Part B, students select two research questions of interest, from a list provided, and conduct research to find the answers. A Google doc of the assignment can be found here.

Answer key for Part B can be found here.

Differentiated Instruction: Accommodations for learners with special needs

For the assignment above, for learners with special needs, you may wish to assign only one of the two parts. Generally, we would assign Part B, finding the answers to research questions. This is also a modification for students who are English language learners.

GAME: Making Camp Navajo LIFE Module 

Students can play the three Making Camp Navajo modules for 20 minutes. The following instructions can be copied into Google classroom, pasted into a Zoom chat or given in class.

Go to Making Camp Navajo https://7generationgames.com/making_camp_navajo/

Play through until you reach the LIFE tab and play all of the activities you find there.

These are the three activities you will play

  • LOL: Lots on Lambs
  • The Many Uses of Sheep
  • Rug Design 

ASSESSMENT

This lesson includes three forms of assessment

  1. Objective Summary of Research (written assignment)
  2. Research to answer questions on an event with primary/secondary sources
  3. Making Camp Navajo Gameplay

Making Camp Navajo – Student Activities completed can be seen in the Making Camp Navajo teacher reports

  1. Assessment in lamb care/lambing season. (True or False)
  2. Assessment in the Many Uses of Sheep for Navajo history. (Matching game)
  3. Students can screenshot a picture of their rug design, like below.