OBJECTIVES :

 to grasp information from the garden plants observation
 to create a herbarium

MATERIALS :

 Plants and tree leaves collected on a walk in the garden
 Adhesive tape
 Scissors
 Newspaper
 Sheets of hard paper

PROCEDURES :

(cf. documents added to this track)

1. Collecting plants in the garden

Choose a species showing the different parts of the plants : fruits, flowers and underground part cleared of all earth traces. As for the trees, take the leaves, fruits and seeds if possible.

Put the samples between newspaper sheets. Identify them correctly with a plant guide.

2. Drying up the collected plants

Spread neatly the plants between newspaper sheets. Put the plants to bed in a press or under heavy books.

3.the herbarium assembly

Once the plants or leaves are dried up, fix them on a sheet of hard paper with thin stripes of adhesive tape.

Indicate for each plant species its common and scientific names, the environment where it grows and other complementary information.

Do not forget to fix the fruit or the seed at the bottom of the sheet, to the right of the plant.

ASSEESSMENT :

Capacity for the pupil :

 to spread properly and dry up the leaves
 to make up with care
 to write the titles with care
 to spell correctly the names
 to identify the plants or trees

Jean-Michel Josse professeur de Sciences de la Vie et de la Terre, Lycée Français Charlemagne de Pointe Noire, Congo Brazzaville