How does the temperature of the air affect the temperature of the soil during the course of a day?

Benefits

• experiment is part of a complete solution with numerous experiments in the field of ecology
• Measurements possible indoors and outdoors, for mobile use
• Especially understandable and didactically prepared description of the experiment (relevance to everyday life, etc.) including protocol questions.
• Future-oriented teaching: Integration into digital science lessons with tablets or smartphones.
• Increased motivation of students by using the intuitive measureAPP.
• Increased media competence.

Tasks

1. measurement of air temperature and soil temperature at different soil depths over a period of 24 hours
2. creation of a measurement curve of all temperature measurements and comparison of the temperature curves

Learning Objectives

• Soil temperature profile
• heat transfer
• Soil water content
• Soil aggregate condition

Why are there so few different plants in a deciduous forest? In a deciduous forest, apart from trees of approximately the same height, hardly any other plants grow, except for young plants of the same tree species. This experiment shows how the light intensity in an oak-beech mixed forest changes during the foliage in spring and what consequences this has for the vegetation.

Benefits

• experiment is part of a complete solution with numerous experiments in the field of ecology
• Measurements possible indoors and outdoors, for mobile use
• Especially understandable and didactically prepared description of the experiment (relevance to everyday life, etc.) including protocol questions.
• Future-oriented teaching: Integration into digital science lessons with tablets or smartphones.
• Increased motivation of students by using the intuitive measureAPP.
• Increased media competence.

Tasks

1. measuring the light intensity in a forest at weekly intervals during bud burst
2. comparison of the measured values

Learning Objectives

• Vegetation
• Sun Plants
• shadow plants
• photosynthesis factor Light intensity

Function and Applications

Have you always wanted to design an ecosystem in the classroom together with your class, observe its development and even measure the changing parameters? Here we have the ideal solution. In three interconnected chambers you can freely design the composition of the system. The transparent chambers are each 29 cm high. Thus, they permit enough room for your ecosystem to grow and thrive over time. Each chamber has three holes in the lid that can either be fully sealed with stoppers or support various Cobra SMARTsense sensors for measurements. The tray not only stabilizes the setup, but also makes your ecosystem transportable.

Benefits

• The 29 cm high chambers allow plenty of room for plants and even smaller animals.
• The three chambers form a self-contained modulatres system to develop classroom-ready ecosystems.
• Multiple uses: e.g., as a culture jar, humid chamber for incubation, osmosis and assimilation chamber.
• All stoppers (without and with holes) and cotton thread are already included.
• The transparent chamber allows observation of the inside.

Equipment and Technical Data

• 3 cylindrical plastic vessels with lids and matching stoppers and cotton thread
• 1 tray suitable for interconnected chambers
• Diameter: approx. 145 mm
• Height with lid: approx. 290 mm

The sensors shown are not included in the scope of delivery.

Basic set allowing the performance of 41 experiments about the following topics:

• Bones, body heat and breathing (3 experiments)
• Plants (18 experiments)
• Nutrients and digestion (11 experiments)
• Soil survey (2 experiments)
• Senses (6 experiments)
• Reproduction (1 experiment)

Benefits

• For first-time experimenting in biology
• Complete equipment set: easy to perform experiments
• Experiments for all basic curriculum topics
• Provides all equipment required for basic biology labs

Equipment and Technical Data

• The equipment set consists of all necessary components for the experiments
• Robust, stackable storage box with a foam insert fitting to the contained equipment

Necessary accessories

• TESS advanced Biology set Biology necessary accessories for 1 group
• TESS advanced Biology set Biology consumables for 10 groups

This set of datalogging devices is ideally suited to shared-work experiments with school groups for outdoor measurements of ecological data and works with mobile devices (iOS and Android).

Benefits

• Whether in the classroom, outdoors or on project days: in this robust aluminium case, you will always find the right device for carrying out fascinating experiments with school groups.
• Up to 4 groups can work on and investigate interesting topics in parallel.
• Works with all iOS and Android devices
• Download free app from Apple App Store or Google PlayStore
• Students can evaluate the data at home, as a homework assignment.
• This device is also ideal for use e.g. in the context of a school hiking day: here, a topographic profile can easily be produced with the weather sensor. In geography lessons, the data can be evaluated and interpreted together. If the height is then set against the temperature, humidity relative to the path, or temperature relative to the time of day, great discoveries can be made, which are both practical and fun.

Equipment and Technical Data

• Robust aluminium case
• 1 x Cobra SMARTsense – Relative Humidity, 0 … 100 %
• 1 x Cobra SMARTsense – pH, 0 … 14
• 1 x Cobra SMARTsense – Conductivity, 0 … 20000 µS/cm
• 1 x Cobra SMARTsense – Temperature, – 40 … 120 °C
• 1 x Cobra SMARTsense – Absolute Pressure, 20…400 kPa
• 1 x Cobra SMARTsense – Light, 1 … 128 kLX
• 1 x Cobra SMARTsense – Colorimeter for the measurement of turbidity, 0 … 100 %
• 1 x pH electrode, plastic, gel-filled
• 1 x 100 red pH 4 buffer tablets
• 1 x 100 green pH 10 buffer tablets
• 5 x 20 ml calibration solution for conductivity electrode
• 2 x protective case for pH and conductivity electrodes
• 1 x 120 labels
• 4 x 100 ml square flange (HDPE)
• 2 x 250 ml PP laboratory beaker

Necessary Accessories

Button Cell CR2032, 3V (2 pieces)

Optional accessories

TESS advanced Environment and Outdoors optional accessories for 10 groups 13445-88D

The digital set allows you to use the latest measurement technology for your environmental and outdoor analysis and is very easy to use. In addition to classic parameters such as temperature, air pressure, brightness, relative humidity, pH, conductivity and water turbidity, the weather station allows you to make complete weather observations and even collect GPS data in the field. The Cobra SMARTlink can not only be used as an interface for the sensors, but also offers additional flexibility for group work with its built-in sensors.

Benefits

• Whether in the classroom, outdoors or on project days: in this robust aluminium case, you will always find the right device for carrying out fascinating experiments with student groups.
• Several student groups can work on and investigate interesting topics in parallel.
• Works with all iOS and Android devices with free app (measureAPP).
• Students can evaluate the data at home, as a homework assignment.
• Ideal for outdoors project days.

Equipment and Technical Data

• Robust aluminum case
• 1 x Cobra SMARTlink
• 1 x Cobra SMARTsense – Weatherstation (Bluetooth + USB)
• 1 x Cobra SMARTsense – Relative Humidity, 0 … 100 %
• 1 x Cobra SMARTsense – pH, 0 … 14
• 1 x Cobra SMARTsense – Conductivity, 0 … 20000 µS/cm
• 1 x Cobra SMARTsense – Temperature, – 40 … 120 °C
• 1 x Cobra SMARTsense – Absolute Pressure, 20…400 kPa
• 1 x Cobra SMARTsense – Light, 1 … 128 kLX
• 1 x Cobra SMARTsense – Colorimeter for the measurement of turbidity, 0 … 100 %
• 1 x pH electrode, plastic, gel-filled
• 1 x 100 red pH 4 buffer tablets
• 1 x 100 green pH 10 buffer tablets
• 5 x 20 ml calibration solution for conductivity electrode
• 2 x protective case for pH and conductivity electrodes
• 1 x 120 labels
• 4 x 100 ml square flange (HDPE)
• 2 x 250 ml PP laboratory beaker

This ring-shaped apparatus enables a temperature gradient to be formed and is a valuable tool for working out ecological relationships.

Benefits

• It allows, e.g., to observe the influence of the temperature of soil on germination and growth of plants
• Soil organisms placed in the temperature organ can move freely and migrate the region they prefer so that their temperature and/or moisture preferences can be studied

Equipment and technical data

• Temperature gradient 10 to 45°C
• Built-in electric heater and through-flow cooling
• 12 radial holes to insert thermometers
• Transparent cover plate with 12 sections

Necessary accessories

• Lab thermometer,-10..+50C (38055-00), 6 pcs
• Rubber tubing, i.d.  8 mm (39283-61), 2 pcs

The leaf of a deciduous plant consists of several layers. Cells with many chloroplasts are found in the deeper layers. The external tissue layer, the epidermis, protects the plant against moisture loss due to evaporation. It does not contain any chloroplasts and the cells appear transparent when viewed under the microscope. Densely packed cells extending upwards and containing numerous chloroplasts are found in the palisade layer. Below, it is followed by the spongy parenchyma, under which lies another epidermis functioning as a boundary tissue.

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files