Can't get Slider to print different Text between intervals

I want to print a different Texts in multiple intervals of a Slider

If (value > 0 && value < 3){text1}

If (value > 3 && value < 5){text2}

If (value > 5 && value < 8){text3}

If (value > 8 && value < 10){text4}

I know how i try is completely wrong. I would appreciate if someone explained how should i set up such an event.

String vaker = '';
  double _value = (0.0);

  void _setValue(double value)
   => setState(() => _value = value){
    if (_value> 0.0 && _value < 0.3)
      setState((){
        vaker = 'Egy nappal előre kapja a HáVéGét';
      });
};

---

new Slider(
    value: (_value),
    onChanged: _setValue,
    activeColor: Colors.orange,
    inactiveColor: Colors.white,
          ),
  new Text('${(vaker)}'),

Hope you understand what I'm trying to do. Thanx in advance for every advice!