Maliko

LESSON PLAN

School: Mitandi secondary school     Term: Two    Name: Kisembo Maliko

Date	Time	Subject	Class	Number of students	Average age
03/06/2016	11:10am-11:50am	Biology	S2	70	16

Theme: Digestion

Sub-theme: Digestion Process

Lesson objectives: by the end of this lesson, the learner should be able to

1.      State the meaning of digestion

2.      Outline the types of digestion and state where they occur

3.      Explain the process of digestion

Teaching methods: question and answer, Exposition and demonstration

Teaching aids: Illustrations, flow chart and story board

References: Mayo (2016). The digestion system. Florida

Lesson Development

Time	Steps	Content	Teachers activities	Students activities
5min	1	What is digestion? Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. Outline the types of digestion. Mechanical digestion: Occurs in the mouth when it is physically broken up into smaller pieces. Chemical digestion: Occurs in the gastrointestinal tract when the food is broken down into small molecules by digestive enzymes	Introduce the sub topic by asking questions. Presents the flow chart	Answer questions
20min	2	Explain the process of digestion Mouth, Esophagus, Stomach, Small intestine, Large intestine	Explain the process of digestion Presents the story board Presents the flow chart	Listen and observe
13min	3	Exercise What is digestion? Outline the types of digestion and state where they occur Outline the process of digestion.	Evaluate the learners by giving an exercise Mark students books	Write down the exercise Present their books for marking.
2min	4	Summary of what has been taught	Summarize what has been taught	Listen and observe.

LESSON 1 ON 25/03/2016

TOPIC: |RIVER SYSTEM

Sub topic: River profile

What is a long profile?

The long profile shows how a river’s gradient changes as it flow from its source to its mouth. A river changes shape as it flows from its source (where a river starts) to its mouth (where a river flows into a sea or lake). The shape of both the long profile (a slice through the river from source to mouth) and the cross profile (a slice across the river) changes.

 

The youthful or upper course of a river

The upper part is steep and the river cuts a narrow and deep V-shaped channel. Further towards the sea, the slope is gentler and the river has a wider channel. In the youthful stage, a river is full of vigor and splash it forms interlocking spurs, Plunge pools, V-shaped valleys, Gorge, River canyon, water fall, rapids and potholes.

                                                                                  

 

The mature stage of a river

In the mature stage, a river slows the speed of flowing and it forms the U-shaped valley, Bluffs, Cliffs. The middle course of a river has more energy and volume then in the upper course. The gradient is gentler and lateral (sideways) erosion has widened the channel. The river channel has also become deeper. Meanders are typical landforms found in this stage of the river

      

The lower course of a river

Nearly all rivers have an upper, middle, and lower course. The beginning of a river, when it flows quickly with lots of energy, is called a young river. The river here is smaller and usually has a rapid, tumbling flow that cuts a narrow channel through rocky hills or mountains. In the old stage, a river is too slow in flowing and it forms the Flood plain, braided channel, meanders, ox-bow lakes, meander scars, Distributaries, Differed tributaries, Lagoons and Deltas.

River profile summery 

Upper Course	Mid Course	Lower Course
Long Profile	Steeply sloping towards the lower sections of the river.	Shallow slopes towards the mouth of the river.	Almost at sea level, very gently sloping towards its mouth.
Cross Profile	Steep sided v-shaped valley. Thin river channel, deep in places.	V-shaped valley remains with a wider valley floor and the river begins to meander across it. The river channel begins to widen and become deeper.	Wide, shallow valley, with large flood plains and meanders. The river channel is wide, deep and smooth sided.

Exercise

1.   What is a long profile?
2.  Outline the stages of the river profile.
3.  Outline three features formed in each stage.